I know I read this as a kid but I didn‘t really remember it. It was published in the 60s and the language really feels like it. One character‘s favorite line is “oh baloney!” 😆
It‘s a cute middle grade read, low pick for me. I looked up to see if there was a movie made, and there was in the 70s, called The Hideaways.
I feel like it probably inspired A Night at the Museum, but there‘s no magic here, just two kids staying in a museum.