McNeil Island is a 6.6 square mile island located in south Puget Sound, lying 2.8 miles across the water from the nearest town. The site was utilized for 142 continuous years as an island-based penal institution, beginning in 1869 with a jail built by the U.S. Army Corps of Engineers. In 1909 the facility became a federal prison, the McNeil Island Federal Penitentiary, which was transferred to the State of Washington in 1981 and renamed the McNeil Island Corrections Center. In 2011 the state closed the prison, and as of 2019 the facility is run by the Department of Social and Health Services as the state's primary Special Commitment Center.

This image shows the Chapel of Mount Tahoma at McNeil Island Penitentiary, which was dedicated on Sunday, April 25, 1965. The Chapel is an interfaith religious center, built and completed in 1963 by the incarcerated population on the island and funded by the community.

Filing date stamped on back of photograph: 25 Apr 1965 (date of photograph, file date, and publication date(s) may differ).

Caption information sources: "McNeil Island and the Federal Penitentiary, 1841-1981," by Daryl C. McClary, HistoryLink.org Essay 5238; and "McNeil Island Corrections Center, 1981-present," by Daryl C. McClary, HistoryLink.org Essay 5239.
Caption information source: "McNeil Island History," retrieved from https://www.doc.wa.gov/about/agency/history/micc.htm#fed-pen
Caption information also derived from captions written by Post-Intelligencer staff and attached to the back of the photograph.