These classic adventure books were a favorite of many young readers as 2 sons of a detective solve a variety of cases. Books are written for readers 8-12. Ideal for a young family/grandkids that like to read. 3 of the original version Collector editions from 1935 to 1955 Have been in storage for several years since our kids grew up. Could be a great Christmas gift for that reader or book collector in the family Make me an offer for 1 or all 3, it helps to pay for my reno... Attached is a list of the 3 books including the revision year: # Title Rev. 14 The Hidden Harbor Mystery 1935 $25 24 The Short-Wave Mystery 1945 $20 35 The Clue in the Embers 1955 $15