The Case of the Elevator Duck (Book/Video, Polly Berrien Berends/Joan Micklin Silver, 1973/1974)

You can digitally borrow and watch them respectively here.

Your Trip Into Space (Book, Lynn Poole, 1953)

You can digitally borrow it here.

Les Inventions Extraordinaires & Les Nouveaux Rxploits de Motimo et Batiba (Books, Jacqueline Held, 1977/1978)

You can digitally borrow them here.

Curl Up Small (Book, Sandol Stoddard Warburg & Trina Schart Hyman, 1964)

You can digitally borrow it here.

Kitten and Cat Stories (Book, Oscar Weigle & Elizabeth Dauber, collected in 1963)

You can digitally borrow it here.

Several Books by Sarah Sargent (Books, Sarah Sargent, 1978-1995)

You can digitally borrow them here.

Special Happenings (Book, stories collected in 1973/1977/1980/1983)

You can digitally borrow multiple editions here (the back and front covers immediately below feature multiple illustrations from stories within that edition, including an entire Edward Gorey book).

You can read multiple editions of various readers in this series here. You can read an article about the covers of the 1977 editions here.

The Curse of the Blue Figurine (Book, John Bellairs, 1983)

You can borrow it digitally here or here.

Rewards (Book, stories collected in 1973)

You can borrow it digitally here.

You can digitally borrow other books of this kind from the publisher from the 70's and 80's here.

These illustrations are by Ikki Matsumoto; you can view and buy his art on his official website here.

Grover and the Everything in the Whole Wide World Museum (Book, Norman Stiles and Daniel Wilcox, 1974)

You can borrow it digitally here or here.

This book is the source of the Carrot Room image:

How to Tell the Birds from the Flowers and Other Wood-Cuts: A Revised Manual of Flornithology for Beginners (Book, Robert Williams Wood, 1917)

You can read it here.

Little Lost Kitten (Book, Lois Lovett & Dale Maxey, 1962)

You can digitally borrow it here.

X, a Fabulous Child's Story (Book, Louis Gould, 1978)

An all-ages story, originally published in a 1972 magazine, about an experiment in which a child is raised without traditional gender roles. You can digitally borrow it here.

Note: the child is referred to by the pronoun 'it', as the use of the singular 'they' was less common at the time.

The Computer That Ate My Brother (Book, 1985)

You can borrow it digitally here.

The Story of the Dancing Frog (Book, Quentin Blake, 1984)

You can digitally borrow it here.

The Ballad of Bad Ben Bilge (Book, Eric van Schmidt, 1965)

You can borrow it digitally here.

The Boy With Dinosaur Hands (Book, Al Carusone & Elaine Clayton, 1998)

You can digitally borrow it here.