These came from a 1930's photo album. I cannot guarantee their age - they are heavier weight glossy paper with plain backs - not divided postcard backs. Each card is approximately 6" by 4".  There is a space marked for a stamp on the backs as shown in photo 2 but no other markings. The set includes:

• Dolly Dingles Little Cousin Robin
• Tommy Tingle
• Dolly Dingle's Little Friend Mary Lamb
• Dolly Dingle's Pretty Little Friend Teedie
• Sammy Snooks
• Dolly Dingle's Little Friend Tottie
• Dolly Dingle's Friend Sammy Gets Ready for the Baseball Season
• Dolly Dingle's Cousin Carol
• Bessie Brooks
• Dolly Dingle's Little Friend Joan and her Kitty