Gordon Newell and Joe Williamson Pacific Coastal Liners, Superior Publishing Co.: Seattle, WA, (Bonanza Books, Crown Publishing: NY), 1959, 192 pp., 1910s
"As late as 1914, however, eleven companies were competing for the coastwise passenger and freight business, although the Pacific Coast Steamship Company was doing more business than the rest of them combined. It was the coming of highway and air competition after World War I that put the coastal liners in the boneyard."