- CollectionErne.gru - Ernest A Grunsfeld, Jr. Collection
- File#2251 - Additions & Alterations to Residence for Mr. & Mrs. Walter Heller. Friedman, Alschuler & Sincere & Ernest A. Grunsfeld Jr. 1949.
- File#4203 - Alterations to Buildings for Mr. & Mrs. Heller. Ernest A. Grunsfeld & Wallace Yerkes Assoc. 1942.
- ItemSheet 1 - Alterations to Bldgs. for Mr. & Mrs. Heller. Hardline on paper. 2-35-42.
