Western Pacific's Diesel Years Paperback 1980 by Joseph A. Strapac

By Joseph A. Strapac. Although generally considered an east-west railway, WP runs primarily north and south in California. WP's high-water mark for steam would have to be the year 1938, when five near-identical 2-8 8-2's were added to the roster - along with seven Alco 4-6 6-4 Challengers.

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