Note: Access is to the Archnet database is open to all.
From MIT Libraries Blog:
The Peggy Crawford: Photographs of Yemen on Archnet — a collaborative project between the Fine Arts Library at Harvard University and the Aga Khan Documentation Center at MIT — highlights a selection of ca. 300 images from the complete collection held in Harvard University’s Fine Arts Library.
Direct to Archnet Database
What is Archnet?
Archnet is a globally-accessible, intellectual resource focused on architecture, urbanism, environmental and landscape design, visual culture, and conservation issues related to the Muslim world. Archnet’s mission is to provide ready access to unique visual and textual material to facilitate teaching, scholarship, and professional work of high quality. Officially launched in 2002 as a partnership between the Aga Khan Trust for Culture and the Massachusetts Institute of Technology (MIT), Archnet has since evolved into the largest open, online architectural library with a focus on Muslim cultures.
Archnet currently provides access to more than 100,000 open access text and visual resources.