The Mad Scientists Club by Bertrand R. Brinley
The first in a series of four books written mainly in the 1960s and 1970s, these books are excellent for boys (or girls) interested in science. Though lots of the technology is now dated, the stories are great fun and show the comradery of boyhood friends, as well as promoting creativity and making science fun and cool. The books revolve around a group of grade school friends in a small Midwestern town who use their brains to get into all kinds of light-hearted mischief. Reminiscent of a more innocent time, there is no real violence or wrong-doing, just boyhood hijinks. Some of the boys’ escapades include building a fake sea monster and launching it on the lake, solving a decades-old bank robbery, and haunting a house. The series is funny and entertaining with an emphasis on using science to solve problems. The other titles are The New Adventures of the Mad Scientists Club, The Big Kerplop!, and The Big Chunk of Ice.