Good to hear from you, LillyLou!
Let’s see, potentially short reads:
Castle by David MacCaulay
Cathedral (too)
Leif the Lucky
Brother Francis and the Friendly Beasts
Apple and the Arrow
Medieval Feast
Castle Diary
Pippo the Fool
Marguerite Makes a Book
Leonardo da Vinci by Diane Stanley
Michelangelo (too)
King Arthur and His Knights (audio)
I think that’s most of them in the grades you mentioned.