- Mysteries according to Humphrey, Betty G. Birney
- Secrets according to Humphrey, Betty G. Birney
- Birney, Betty G, Humphrey's tiny tales, 1
- Birney, Betty G, Humphrey adventures, 12
- Birney, Betty G, Humphrey adventures, 6
- Adventure according to Humphrey, Betty G. Birney
- Trouble according to Humphrey, Betty G. Birney
- Summer according to Humphrey, Betty G. Birney
- School days according to Humphrey, Betty G. Birney
- Birney, Betty G, Humphrey adventures, 11
- Surprises according to Humphrey, Betty G. Birney
- Birney, Betty G, Humphrey adventures
- Birney, Betty G, Humphrey adventures, 8
- Humphrey's playful puppy problem, Betty G. Birney ; illustrated by Priscilla Burris
- Birney, Betty G, Humphrey adventures, 1
- The world according to Humphrey, Betty G. Birney
- Spring according to Humphrey, Betty G. Birney
- Life according to Og the frog, Betty G. Birney
- Imagination according to Humphrey, Betty G. Birney
- Birney, Betty G, Humphrey adventures, 7
- Birney, Betty G, Humphrey adventures, 4
- Birney, Betty G, Humphrey's tiny tales
- Winter according to Humphrey, Betty G. Birney
- Birney, Betty G, Humphrey adventures, 9
- Humphrey's really wheely racing day, Betty G. Birney ; illustrated by Priscilla Burris
- Friendship according to Humphrey, Betty G. Birney
- Humphrey's creepy-crawly camping adventure, Betty G. Birney ; illustrated by Priscilla Burris