This official First Day Cover features the 13¢ Colorado state flag stamp issued February 23, 1976, in Washington, DC. The cachet depicts the statue of Dr. Florence R. Sabin (1871-1953) alongside the Colorado flag and notes the state's 1876 admission to the Union.
Florence Sabin was a pioneering physician, medical researcher, and public-health advocate who became the first woman to hold a full professorship at Johns Hopkins School of Medicine. Her work on the lymphatic system and tuberculosis helped shape modern public-health policy in Colorado and nationwide during the early twentieth century.
The cachet artwork highlights her statue in the National Statuary Hall Collection, emphasizing her roles as doctor, teacher, scientist, and humanitarian. The cover also carries the Bicentennial Era inscription that appeared on many 1976 issues.
A handsome addition for collectors of American women in medicine, Colorado history, or Bicentennial-era First Day Covers, this example remains in clean, collectible condition with a clear Washington, DC postmark.
