I bought it in 1971 and remember reading and re-reading it. I was so entertained by the adventure... I still have the book and gave it to my daughters to read when they were in the 5th grade. And then talked with them about it; telling them of my own reading of it so very long ago. How cool that was for me! It's a small, simple, book... but 43 years ago, I drew great pleasure from it. As I did in 1999, in 2007 and 2012 with my daughters.