https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/14298963![The Tower]/[Gate Tower to Drain culvert - Pilarchitos Lake, Spring Valley Water Works, supplying San Francisco-height..60…](https://images.rawpixel.com/image_social_landscape/cHJpdmF0ZS9sci9pbWFnZXMvd2Vic2l0ZS8yMDI0LTAyL2xyL2dldHR5MTA3OXhxLWltYWdlLmpwZw.jpg)
The Tower]/[Gate Tower to Drain culvert - Pilarchitos Lake, Spring Valley Water Works, supplying San Francisco-height..60 feet by Carleton Watkins
Original public domain image from Getty Museum
Public DomainFree CC0 image for Personal and Business use