The San Francisco Blueprints Collection contains blueprints for buildings from the early part of the 20th century in San Francisco. For the most part, the blueprints are not complete sets of drawings, but consist of just a few sheets of drawings per project. Some projects may have floor plans, sections, elevations, structural plans, or mechanical plans, but the contents are not consistent. A few projects only contain one sheet of drawings. Many of the blueprints are in poor condition, with tears, weathered edges, and missing pieces. The blueprints are very fragile and will require staff assistance during research room reference appointments.

Location description note: For the majority of the projects, an exact street address number is not listed on the drawings, instead, the nearest cross streets or block is listed. Some street names and numbers might have changed; check with repository for exact location details.