50 volumes, including index. Variously illustrated, some with folding maps in rear pockets. 8½x5½, various color cloth, spines gilt-lettered. Limited Editions, most are one of 500 copies.

The works published are personal narratives of travel and adventure on the peninsula of Baja California from the earliest times to the present. Complete set as issued by Dawson's. There was later a volume 51 published by the Natural History Museum of Los Angeles County. Series prospectus laid in to volume one.