The Library of Congress Prints & Photographs Division holds over four million items in approximately 140 collections, which are related to subjects of architecture, design, and engineering. Therefore, a single alphabetical list could be overwhelming. Instead, we have grouped the entries into five categories:

• Primary Archives
  This section includes collections for which the primary body of an architect's, designer's, or engineer's work is available for research in the Prints & Photographs Reading Room.
• Selected Projects
  Similar to the "Primary Archives," this section of the guide describes important projects for which selected work by architects, engineers, and designers is available, but not a full archive.
• Thematic Collections
  These architecture and design collections include content dedicated to a specific theme.
• Photographer Archives
  This section includes collections for which the primary body of an architecture, design, and engineering photographer's work is available for research in the Prints & Photographs Reading Room.
• Other Collections
  These collections include information resources other than the above, which are essential for the study of the built world.

We hope that this arrangement can encourage you to browse through the entries and discover material of interest through serendipity as well as name recognition.