Start with high-confidence circus stories books, then narrow by subgenre or adjacent topics.
Paddington Bear at the Circus
Michael Bond
Professor Renoir's Collection of Oddities, Curiosities, and Delights
Randall Platt
All Aboard the Circus Mcgurkus
Dr. Seuss
The Bootlace Magician
Cassie Beasley
Step Into the Spotlight!: a Branches Book (the Amazing Stardust Friends #1)
Heather Alexander
Sidewalk Circus
Paul Fleischman
Ninja Meerkats (#4): Hollywood Showdown
Gareth P. Jones
Remarkables
Lisa Mantchev
Smoke and Mirrors
K. D. Halbrook
The Great Zapfino
Mac Barnett
Claude at the Circus
Alex T. Smith
Doctor Dolittle's Circus
Hugh Lofting
