Originally published: New York : Grosset and Dunlap, 1927; Newcastle-upon-Tyne : H. Hill, 1951.
OBNB doesn't sell books, but you may be able to find a copy at one of these websites:
The tower treasure by Franklin W. Dixon. ISBN 0001605313. Published by Collins in 1974. Publication and catalogue information, links to buy online and reader comments.
