- 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.
- ItemSheet 1 - Additions & Alterations. Hardline on paper. 1-25-49.
- ItemSheet 1 - Additions and Alterations to Res. for Mr. & Mrs. Heller. Blueprint. 1-25-49.
- ItemSheet 2 - Additions & Alterations. 1-25-49.
