This project was indeed a labor of love; per their site: "over 3,000 photographs, postcards and menus form the original Sacramento Digital Collections which – from beginning to end – took over a year to compile, scan, and describe. The project mission is to provide an image-based window into the social, political and economic history of the Greater Sacramento area, from the 1840s to the present-day."
The images are a real portal to the past -- enjoy!