Syd Hoff books in order
17 books in the catalogue, about 16 hours of reading in all; the shortest takes 35 minutes and the longest 2 hours.
1 series and 14 standalone books in the catalogue.
Danny and the Dinosaur
7 books
Danny and the Dinosaur 1.2 h 
Happy Birthday, Danny and the Dinosaur 35 min 
Danny and the Dinosaur Go to Camp 53 min Danny and the Dinosaur: Too Tall length not known
Danny and the Dinosaur and the New Puppy length not known
Danny and the Dinosaur and the Girl Next Door length not known
Danny and the Dinosaur: School Days length not known
Standalone books
Grizzwold 1.2 h 
Julius 1.2 h 
Sammy the Seal 1.2 h 
Oliver 1.2 h 
Who Will Be My Friends? 35 min 
Albert the Albatross 35 min 
Chester 1.2 h 
Stanley 1.2 h 
The Horse in Harry's Room 35 min 
Syd Hoff Shows You How to Draw Cartoons 52 min 
Barney's Horse 35 min 
Mrs. Brice's Mice 35 min 
The Lighthouse Children 35 min 
The Danny and the Dinosaur Treasury 2.4 h