Baby announcements, gift and greeting cards from the UCLA Biomedical Library collection of Baby Books. The shower cards were received before the baby was born. Announcements were often purchased or made in advance, and filled out afterwards. Notice the use of blue for girls and pink for boys in the 1910s and 1920s, and the use of pink and blue in combination for both boys and girls.
 
 
A set of greeting cards for a baby girl born in 1960. Notice the use of pink and blue in the cards that were designed for "baby" as opposed to "girl". In 1960, pink and blue were still used together as baby colors (even for boys). I would love to see more vintage baby cards!