Jim the Boy
by Tony Earley (2000)
A boy whose father died before he was born, but is very much present in his and his mother's life*, grows up in small town America with trains, Ty Cobb, the coming of electric lights, and his 3 uncles to show him the way. Good balance between the lighter county fair and school yard chapters and those that deal with Polio, a dead father, and a scary grandfather. Captures the confusion and perspective of a young boy well.
*Probably some of the "eternal love" stuff is above a 10 yr old, but even if the boys just skim through those parts there's a lot good in the book.