This was a children's or young adult's book in my public school library (year 1965). Storyline: youngsters find a bridge in the forest and when they cross it they shrink and find themselves in a...
A children's or young adult book that was in my public school library cir. 1965 (I read it when I was about 11 or 12 years of age) about youngsters finding a bridge in the forest and when they cross...