Consists of five photo albums and several brochures that document the construction of numerous Zimmcor curtain wall projects between 1974 and 1987. The photo albums were created and maintained by Ewald Caspar who started working for Zimmcor in the 1960s and went on to become Vice President of the company before leaving in 1987. The photographs provide views of numerous important curtain wall buildings, largely from the early to mid-1980s. Among the project documented in the albums are the National Gallery of Canada in Ottawa, designed by Moshe Safdie, the Peoria Civic Centre in Peoria, Illinois, designed by Philip Johnson, the Imperial Tobacco Headquarters Building in Bristol, England, designed by Skidmore, Owings & Merrill, and the Bank of Canada Expansion Building in Ottawa, designed by Arthur Erickson. Several brochures for a selection of the projects are also included in the collection.