Dating from 1915 to the 1920s, these suffragist Valentines cards are collected by the League of Women Voters, who worked tirelessly to win the vote for women.
Suffragists could give these to the men in their lives as a reminder that gestures of affection were one thing, while political support was something else altogether.
Prior to passage of the 19th Amendment, suffragists used holidays like Valentine's Day to promote the cause of "Votes for Women." The National Woman Suffrage Association (NAWSA), the League's predecessor, even created its own suffrage postcards!
Suffragist Valentines: "Love Me, Love My Vote"
[League of Women Voters]
(via Sociological Images)