010648: Boards are Blue Tweed. Front cover has "TOM SWIFT Jr." and his portrait on it. No dustjacket. Boards have light rubbing along edges and corners. Otherwise, pages are clean, unmarked, tightly bound and sharp cornered. Scarce, Out Of Print, Book. "'We're trapped a mile below the ocean's surface,' Tom Swift announces to his companions as calmly as possible. His father and Bud Barclay exchange fearful glances in the air-bubble elevator stopped in its undersea descent by a jammed cable. This close call is only one of the many hazards which beset Tom on his most challenging deep-sea venture - a trip to the ancient city of gold on the ocean bottom.": Vol. 15: 5 x 7.5 in.: 184 pages