He did write a book and yes it was SP that he modeled...Richard....not Dick will do better in your search for more info....
http://www.antiqbook.com/boox/gavora/22775.shtml
MACGREGOR, BRUCE A., AND RICHARD TRUESDALE South Pacific Coast, a Centennial
Boulder, CO, Pruett Publishing Company. 1982, First edition, first printing. Hardcover. A centennial history of the South Pacific Coast Railroad between San Francisco and Santa Cruz. 351 pages with full-page color frontis illustrated by Phil Ronfor, historic photographs, maps, station elevation illustration in Santa Cruz, a few car diagrams, a full page color illustration by Howard Fogg, and index. Two corners lightly bumped, else fine in near fine dust jacket with corresponding corners bumped, a 1/2 inch tear at the top of the front panel and one to the rear panel, and light edge wear at corners and spine panel ends.
USD 125.00
Offered by: Robert Gavora, Fine and Rare Books - Book number: 22775