Johnson, S. Y. (2001). Active tectonics of the Devils Mountain fault and related structures, northern Puget Lowland and eastern Strait of Juan de Fuca region, Pacific Northwest (Version 1.0.). U.S. Dept. of the Interior, U.S. Geological Survey For sale by U.S. Geological Survey, Information Services.

Johnson, Samuel Y. Active Tectonics of the Devils Mountain Fault and Related Structures, Northern Puget Lowland and Eastern Strait of Juan De Fuca Region, Pacific Northwest. Version 1.0. Reston, VA, Denver, CO: U.S. Dept. of the Interior, U.S. Geological Survey For sale by U.S. Geological Survey, Information Services, 2001.

Johnson, Samuel Y. Active Tectonics of the Devils Mountain Fault and Related Structures, Northern Puget Lowland and Eastern Strait of Juan De Fuca Region, Pacific Northwest. Version 1.0. U.S. Dept. of the Interior, U.S. Geological Survey For sale by U.S. Geological Survey, Information Services, 2001.