1/27/1964 — Margaret Chase Smith, the first woman elected to both the U.S. House & the U.S. Senate (Maine-R), announces her candidacy for President of the United States at a luncheon of the Women’s National Press Club luncheon #womenshistory #Maine #gov #SheIsTheFirst #PolSky
January 27, 2026 at 3:22 PM
1/27/1964 — Margaret Chase Smith, the first woman elected to both the U.S. House & the U.S. Senate (Maine-R), announces her candidacy for President of the United States at a luncheon of the Women’s National Press Club luncheon #womenshistory #Maine #gov #SheIsTheFirst #PolSky
1/28/1938 — Crystal Bird Fauset is elected to the Pennsylvania state legislature, she becomes the first African American female state legislator. She was later appointed by President Franklin D. Roosevelt, as a Civil Defense race relations advisor #womenshistory #gov #woc #BHM #PolSky #SheIsTheFirst
January 28, 2026 at 3:17 PM
1/28/1938 — Crystal Bird Fauset is elected to the Pennsylvania state legislature, she becomes the first African American female state legislator. She was later appointed by President Franklin D. Roosevelt, as a Civil Defense race relations advisor #womenshistory #gov #woc #BHM #PolSky #SheIsTheFirst
2/24/1864 — Rebecca Lee Crumpler is awarded a doctoral degree from the New England Female Medical College in Boston, Massachusetts, making her the very first African-American woman to earn a medical degree #womenshistory #WomenInSTEM #BlackHistoryMonth #BHM #MedSky #HistMed #woc #SheIsTheFirst #TDIH
February 24, 2026 at 2:17 PM
2/24/1864 — Rebecca Lee Crumpler is awarded a doctoral degree from the New England Female Medical College in Boston, Massachusetts, making her the very first African-American woman to earn a medical degree #womenshistory #WomenInSTEM #BlackHistoryMonth #BHM #MedSky #HistMed #woc #SheIsTheFirst #TDIH
7/20/1900 — Eleanor Annie Lamson becomes the first female astronomer to be hired by the United States Naval Observatory in Washington, District of Columbia #womenshistory #WomenInSTEM #HistSci #SheIsTheFirst #Navy #military #OTD #TDIH
July 20, 2025 at 2:25 PM
7/20/1900 — Eleanor Annie Lamson becomes the first female astronomer to be hired by the United States Naval Observatory in Washington, District of Columbia #womenshistory #WomenInSTEM #HistSci #SheIsTheFirst #Navy #military #OTD #TDIH
7/21/1856 — b. Louise Bethune, American architect. The first professional woman architect in the United States; the first elected female member of the American Institute of Architects (1889) #womenshistory #WomenInSTEM #architecture #architects #MathSky #SheIsTheFirst
July 21, 2026 at 3:21 PM
7/21/1856 — b. Louise Bethune, American architect. The first professional woman architect in the United States; the first elected female member of the American Institute of Architects (1889) #womenshistory #WomenInSTEM #architecture #architects #MathSky #SheIsTheFirst
5/2/1901 — b. Oonah Keogh, Irish investor, stockbroker. The first woman to join the Dublin Stock Exchange in Dublin, Ireland (1925). Likely the first female stockbroker worldwide to be accredited on a national exchange #womenshistory #WomenInSTEM #SheIsTheFirst #stockmarkets #OTD
May 2, 2025 at 7:14 PM
5/2/1901 — b. Oonah Keogh, Irish investor, stockbroker. The first woman to join the Dublin Stock Exchange in Dublin, Ireland (1925). Likely the first female stockbroker worldwide to be accredited on a national exchange #womenshistory #WomenInSTEM #SheIsTheFirst #stockmarkets #OTD
6/30/1927 — Phoebe Fairgrave Omlie, American aviator, became the first woman in the United States to be issued a pilot’s license #womenshistory #WomenInSTEM #aviation #AVgeeks #SciSky #HistSci #SheIsTheFirst
June 30, 2026 at 4:25 PM
6/30/1927 — Phoebe Fairgrave Omlie, American aviator, became the first woman in the United States to be issued a pilot’s license #womenshistory #WomenInSTEM #aviation #AVgeeks #SciSky #HistSci #SheIsTheFirst
7/1/2014 — Michelle Howard, American naval officer, becomes the first four-star female admiral in the 236 yr history of the U.S. Navy; she also became vice chief of naval operations. The first Af-Am wmn to captain a U.S. naval ship (1999). #womenshistory #navy #military #DOD #gov #woc #SheIsTheFirst
July 1, 2026 at 4:38 PM
7/1/2014 — Michelle Howard, American naval officer, becomes the first four-star female admiral in the 236 yr history of the U.S. Navy; she also became vice chief of naval operations. The first Af-Am wmn to captain a U.S. naval ship (1999). #womenshistory #navy #military #DOD #gov #woc #SheIsTheFirst
#HappyEaster | U.S. Patent for the First Bra | #WomenInSTEM #SheIsTheFirst #textiles #garments #HERstory #USPTO #patents
4/20/1891 — b. Mary Phelps Jacob, American inventor, author, poet, publisher, philanthropist. Arts patron, socialite; she was awarded the first patent for what is now considered the modern bra, she was not the first to invent the first bra #womenshistory #WomenInSTEM #fashion #IP #patents #OTD
April 20, 2025 at 5:00 PM
#HappyEaster | U.S. Patent for the First Bra | #WomenInSTEM #SheIsTheFirst #textiles #garments #HERstory #USPTO #patents
3/4/1867 — b. Ida Gray Nelson, American dentist, dental educator. The first African-American woman to earn a doctor of dental surgery degree (DDS); mentored other black women into the dental profession #WomensHistoryMonth #BHM2025 #WomenInSTEM #HistMed #woc #SheIsTheFirst #OTD
March 4, 2025 at 2:54 PM
3/4/1867 — b. Ida Gray Nelson, American dentist, dental educator. The first African-American woman to earn a doctor of dental surgery degree (DDS); mentored other black women into the dental profession #WomensHistoryMonth #BHM2025 #WomenInSTEM #HistMed #woc #SheIsTheFirst #OTD
5/19/1912 — Dora Keen, American mountaineer, alpinist, becomes the first person to climb to the sub-Arctic peak of Mount Blackburn, Alaska #womenshistory #WomenInSTEM #MountainClimbing #SciSky #HistSci #SheIsTheFirst
May 19, 2026 at 12:44 PM
5/19/1912 — Dora Keen, American mountaineer, alpinist, becomes the first person to climb to the sub-Arctic peak of Mount Blackburn, Alaska #womenshistory #WomenInSTEM #MountainClimbing #SciSky #HistSci #SheIsTheFirst
7/2/1861 — b. Grace Hebard, American historian, lawyer, suffragist, educator, author. Wyoming historian, prominent scholar, political economist; she was the first woman admitted to the Wyoming bar (1898) #womenshistory #womenwriters #AcademicSky #EduSky #PolSky #LawSky #law #gov #SheIsTheFirst
July 2, 2026 at 11:41 AM
7/2/1861 — b. Grace Hebard, American historian, lawyer, suffragist, educator, author. Wyoming historian, prominent scholar, political economist; she was the first woman admitted to the Wyoming bar (1898) #womenshistory #womenwriters #AcademicSky #EduSky #PolSky #LawSky #law #gov #SheIsTheFirst
3/16/1883 — Susan Hayhurst, already a pioneer American female physician, becomes the first woman to graduate from a pharmaceutical college in the United States, Philadelphia College of Pharmacy in Pennsylvania #WomensHistoryMonth #WomenInSTEM #HistMed #SheIsTheFirst #OTD
March 16, 2025 at 3:18 PM
3/16/1883 — Susan Hayhurst, already a pioneer American female physician, becomes the first woman to graduate from a pharmaceutical college in the United States, Philadelphia College of Pharmacy in Pennsylvania #WomensHistoryMonth #WomenInSTEM #HistMed #SheIsTheFirst #OTD
10/13/1939 — Evelyn “Pinky” Kilgore, American pioneer aviator, becomes the first woman to receive a flight instructor’s license from the Civil Aeronautics Authority. Also an aviation instructor at the Tri-City Airport in Southern California #womenshistory #WomenInSTEM #aviation #SheIsTheFirst #OTD
October 13, 2025 at 5:18 PM
10/13/1939 — Evelyn “Pinky” Kilgore, American pioneer aviator, becomes the first woman to receive a flight instructor’s license from the Civil Aeronautics Authority. Also an aviation instructor at the Tri-City Airport in Southern California #womenshistory #WomenInSTEM #aviation #SheIsTheFirst #OTD
5/4/1964 — Jerrie Mock, the first woman to fly around the world solo, is honored with the U.S. Federal Aviation Agency’s Decoration for Exceptional Service for her record-setting 29 day solo flight around the world in a single engine airplane #womenshistory #WomenInSTEM #SheIsTheFirst #aviation #OTD
May 4, 2025 at 4:46 PM
5/4/1964 — Jerrie Mock, the first woman to fly around the world solo, is honored with the U.S. Federal Aviation Agency’s Decoration for Exceptional Service for her record-setting 29 day solo flight around the world in a single engine airplane #womenshistory #WomenInSTEM #SheIsTheFirst #aviation #OTD
8/7/1909 — Alice Ramsey + three women traveling in a green Maxwell 30 become the first women to complete a transcontinental automobile trip; Broadway, NYC to San Francisco, CA. Ramsey, the only driver, was the first wmn to drive across the US #womenshistory #WomenInSTEM #auto #travel #SheIsTheFirst
August 7, 2026 at 4:13 PM
8/7/1909 — Alice Ramsey + three women traveling in a green Maxwell 30 become the first women to complete a transcontinental automobile trip; Broadway, NYC to San Francisco, CA. Ramsey, the only driver, was the first wmn to drive across the US #womenshistory #WomenInSTEM #auto #travel #SheIsTheFirst
4/17/1964 — Jerrie Mock, American aviator, becomes the first woman to fly solo around the world. At age 38, she flew a single engine Cessna 180 which she named “Spirit of Columbus”; the 23k mile, 29 day flight started and ended in Columbus, Ohio #womenshistory #WomenInSTEM #SheIsTheFirst #aviation
April 18, 2025 at 12:01 PM
4/17/1964 — Jerrie Mock, American aviator, becomes the first woman to fly solo around the world. At age 38, she flew a single engine Cessna 180 which she named “Spirit of Columbus”; the 23k mile, 29 day flight started and ended in Columbus, Ohio #womenshistory #WomenInSTEM #SheIsTheFirst #aviation
3/4/1982 — Bertha Wernham Wilson CC FRSC, Scottish-Canadian jurist and lawyer becomes the first woman appointed to the Supreme Court of Canada #WomensHistoryMonth #womenshistory #SheIsTheFirst #OTD | #Canada #law #gov
March 4, 2025 at 3:09 PM
3/4/1982 — Bertha Wernham Wilson CC FRSC, Scottish-Canadian jurist and lawyer becomes the first woman appointed to the Supreme Court of Canada #WomensHistoryMonth #womenshistory #SheIsTheFirst #OTD | #Canada #law #gov
11/7/1916 — Jeanette Pickering Rankin, American suffragist, peace activist, reformer, becomes the first woman elected to the United States Congress, Montana-R (1917-19) #womenshistory #gov #law #SheIsTheFirst #TDIH
November 7, 2025 at 4:32 PM
11/7/1916 — Jeanette Pickering Rankin, American suffragist, peace activist, reformer, becomes the first woman elected to the United States Congress, Montana-R (1917-19) #womenshistory #gov #law #SheIsTheFirst #TDIH
5/15/2010 — Jessica Watson, Australian sailor, at age 16 becomes the youngest person to sail solo around the world non-stop unassisted. Departed Sydney 10/18/2009, crossed equator in the Pacific, then the Atlantic+Indian Oceans, returned to Sydney #womenshistory #SheIsTheFirst #WomenInSTEM #OceanSky
May 15, 2026 at 1:02 PM
5/15/2010 — Jessica Watson, Australian sailor, at age 16 becomes the youngest person to sail solo around the world non-stop unassisted. Departed Sydney 10/18/2009, crossed equator in the Pacific, then the Atlantic+Indian Oceans, returned to Sydney #womenshistory #SheIsTheFirst #WomenInSTEM #OceanSky
4/24/1885 — Annie Oakley, legendary sharpshooter and America’s first female superstar, is hired by Nate Salsbury to join Buffalo Bill’s Wild West show #womenshistory #HERstory #SheIsTheFirst #sharpshooter #OTD
April 24, 2025 at 3:35 PM
4/24/1885 — Annie Oakley, legendary sharpshooter and America’s first female superstar, is hired by Nate Salsbury to join Buffalo Bill’s Wild West show #womenshistory #HERstory #SheIsTheFirst #sharpshooter #OTD
3/9/1926 — Bertha Knight Landes is elected the first woman mayor of Seattle, Washington (1926-28); she becomes the first female executive of a major city in the United States. Jenny Durkan was elected the second female mayor of Seattle (2017) #WomensHistoryMonth #GovSky #LawSky #SheIsTheFirst #OTD
March 9, 2025 at 3:55 PM
3/9/1926 — Bertha Knight Landes is elected the first woman mayor of Seattle, Washington (1926-28); she becomes the first female executive of a major city in the United States. Jenny Durkan was elected the second female mayor of Seattle (2017) #WomensHistoryMonth #GovSky #LawSky #SheIsTheFirst #OTD
3/2/1860 — b. Suzanna Madora Salter, American government official, temperance leader, activist. The first female mayor in the United States, mayor of Argonia, Kansas; and the first woman elected to any political office in the U.S. (1887) #WomensHistoryMonth #womenshistory #OTD #SheIsTheFirst #gov
March 2, 2025 at 4:20 PM
3/2/1860 — b. Suzanna Madora Salter, American government official, temperance leader, activist. The first female mayor in the United States, mayor of Argonia, Kansas; and the first woman elected to any political office in the U.S. (1887) #WomensHistoryMonth #womenshistory #OTD #SheIsTheFirst #gov
10/24/1901 — Annie Edson Taylor (The Queen of the Mist), American teacher, adventurer, becomes the first person go over Niagara Falls and live. In need of money and seeking fame she thought up the attention-getting stunt; she did not know how to swim #womenshistory #SheIsTheFirst #DareDevil #TDIH
October 24, 2025 at 5:12 PM
10/24/1901 — Annie Edson Taylor (The Queen of the Mist), American teacher, adventurer, becomes the first person go over Niagara Falls and live. In need of money and seeking fame she thought up the attention-getting stunt; she did not know how to swim #womenshistory #SheIsTheFirst #DareDevil #TDIH
3/15/1825 — b. Harriet E. Wilson, American author. Wrote the important early African-American literary work, “Our Nig: Sketches From the Life of a Free Black”, Boston, Mass (1858). She was the first Af-Am to publish a novel in the U.S. #WomensHistoryMonth #BlackSky #SheIsTheFirst #woc #OTD
March 15, 2025 at 4:17 PM
3/15/1825 — b. Harriet E. Wilson, American author. Wrote the important early African-American literary work, “Our Nig: Sketches From the Life of a Free Black”, Boston, Mass (1858). She was the first Af-Am to publish a novel in the U.S. #WomensHistoryMonth #BlackSky #SheIsTheFirst #woc #OTD