- CollectionErne.gru - Ernest A Grunsfeld, Jr. Collection
- File#4009 - Alterations to Buildings for Mr. & Mrs. Heller. Ernest Grunsfeld Jr. & Wallace Yerkes Assoc. 1940.
- ItemSheet 1 - First floor Plan Service Building, Hardline on paper. 9-11-40.
- ItemSheet 2 - Elevations Service Building, Hardline on paper. 9-11-40.
- ItemSheet 3 - Details Service Building. Hardline on paper. 9-11-40.
- ItemSheet 4 - Kitchen Interiors Service Building. Hardline on paper. 9-4-40.
- ItemSheet - Small drawings by Robinson Furnace Co. 7-10-40.
- Item2 Blueprints by Robinson Furnace Co. for Heller Service Building. Sept. 1940.
