See Fine Scenery, Door County Democrat, Volume 16, Number 20, May 16, 1908, page 1
The State Park., Door County Advocate, Volume 47, Number 18, July 30, 1908, page 8
"Work in Peninsula Park" by Jens Jenson, August 31, 1935; letter published in the Door County Advocate, Volume 74, Number 26, September 6, 1935, page 6
12 G1S-12 Peninsula State Park Observation Tower, Fish Creek, Wisconsin by Brent Ballweg and Arlen Ostreng, Structural Condition Assessment Report Prepared for State of Wisconsin Department of Natural Resources, Edge Project Number 8016-12, Prairie du Sac, Wisconsin: Edge Consulting Engineers, May 20, 2015, page 2, (page 5 of the pdf), Archived January 31, 2016
Peninsula State Park Master Plan Concept Element by Daniel C. Rogers, Gary Patzke, Jordan Korotev, Daniel G. Olson, and Lee Kernen, Wisconsin Department of Natural Resources, April 1980, Section 1. Background Information, Part C. History of the Park, page 2 (page 5 of the pdf)
Peninsula State Park Master Plan Concept Element by Daniel C. Rogers, Gary Patzke, Jordan Korotev, Daniel G. Olson, and Lee Kernen, Wisconsin Department of Natural Resources, Part II, Resource Capabilities and Inventory, part G. Wetlands, page 6 (page 9 of the pdf), April 1980
