This image shows a typical mid-20th Century fishing dock and processing shed. The causeway and pilings are simple wood construction, intended for light usage.
The L.L. Cook Co., Milwaukee, WI
The description states:
Fishing Dock
Door County, Wisconsin
A familiar sight seen along Door County’s picturesque shoreline.
—Door County is a peninsula of land in the extreme northeast of Wisconsin, connected to the rest of the state at the southern end.
This card is dated 1958.