The Clarke Studios Orders and Sales are a subsection of the Clarke Stained Glass Studios Collection, and contain books of estimates, order books and sales information about commissions for stained glass windows.

The Clarke Stained Glass Studios Collection contains stained glass designs, colour schemes, opus sectile designs, architects' blueprints and plans, photographs, documentation about sales and orders, correspondence, financial records, staffing records, and research documentation related to stained glass work executed by the Clarke Studios, Dublin from 1893 to 1972. The bulk of the material covers the period after Harry Clarke's death in 1931. Stained glass works were commissioned from Ireland, Great Britain, USA, Africa, Australia and New Zealand.