for Dog 4491 by Sneed B. Collard, III
Thanks to a mysterious combination of events, a dog named Sophie travels from the year 1926 to the present, where she follows a boy Sam home from school. Through a bit of sleuthing, Sam and his outspoken grandfather Horace discover the old neighborhood Sophie has apparently come from. With Sophie�s help, Sam travels back to 1926 to meet Sophie�s owner, another 11 year-old named Rollie. The two boys discover they have a lot in common�including the notorious Cheesebro gang that has terrorized their city of Enterprise in both time periods! Together, the new friends hatch a plot to stop the corruption, crime, and blight that has afflicted their city�and pave the way for a brighter, revitalized future.
Publisher description retrieved from Google Books.