Women on US stamps

Martha Washington22 1903 Issue-8c.jpg Stamp, Issued 1902

The first stamp featuring an American women. ]] The history of women on US stamps begins in 1893, when Queen Isabella became the first woman on a US stamp. Queen Isabella helped support Christopher Columbus's 1492 voyage, and 1893 marked the end of a year-long celebration of the 400th anniversary of that voyage. The first US stamp honoring an American woman honored Martha Washington, and it was issued in 1902. In 1907, Pocahontas became the first Native American woman (and the first Native American) to be honored on a US stamp. In 1978, Harriet Tubman became the first African-American woman to be honored on a US stamp. In 2001, Frida Kahlo became the first Hispanic woman to be honored on a US stamp, though she was Mexican not American.

Groups of women have also been honored on US stamps, for example Gold Star Mothers (1948) and "Women In Our Armed Services" (1952).

There are also generic, unnamed women who appear on US stamps, such as a woman marching with men for the National Recovery Act (1933).

US stamps have also depicted female goddesses and allegories, such as personifications of liberty.

Approval process
Since 1957, the Citizens’ Stamp Advisory Committee (CSAC) has worked as the sole group responsible for selecting and recommending subjects to be featured on U.S. stamps. Members of the committee are appointed by the Postmaster General. There are 11 members on the committee, currently three women and 8 men.

Forever Stamps
First sold in April 2007, Forever Stamps can be used to mail a one-ounce letter regardless of when the stamps are purchased or used and no matter how prices may change in the future. In 2011, all first-class, one ounce stamps became Forever Stamps and all commemorative stamps began being issued as Forever Stamps.

Categorization of Stamps
The U.S. Postal Service classifies many stamps featuring groups, artwork, works of literature, and social efforts and awareness campaigns as "women stamps". Among these groups are the artwork of Mary Cassatt (featured five times), the Nursing stamp, and the Breast Cancer Awareness Month stamp.

List of women on US stamps
This list can be expanded with women stamps from here  Sources: