This is Danny Dunn And the Anti-Gravity Paint book from the Danny Dunn book series. The book is in fair condition with marker marks and writing on the pages before the story begins. The short novel is readable with no marks, just so yellowing of the pages. Please refer to the photos for a better look at the condition.

I do have three other Danny Dunn books in my eBay store if interested. If you decide to buy more I can bundle and adjust the shipping before you pay for them.