Mark Tidd's Citadel

This edition had all images removed. Title: Mark Tidd's Citadel Credits: Produced by Roger Frank, the Google Books Library Project(https://books.google.com) and the Online DistributedProofreading Team at http://www.pgdp.net (This book wasproduced from images made available by the HathiTrustDigital Library.) Summary: "Mark Tidd's Citadel" by Clarence Budington Kelland is a children’s adventure novel written in the early 20th century. The story follows Mark Tidd and his friends as they...