The following is an index to property transfer deeds and party wall agreements recorded at the Suffolk County Deed Registry from the original land purchase until conversion of the building into condominiums. Mortgages, trust agreements, and other similar recorded documents are not included. This index is intended as a guide only; actual deeds should be reviewed for details.
| Transfers of Land and Buildings | ||||
| Date of Deed | Grantor | Grantee | Book | Page |
| 21Dec1993 | Robert G. Segel, trustee of 21-23 Marlborough Street Realty Trust | 21-23 Marlborough Street Condominium | 18754 | 27 |
| 12Apr1993 | Macmillan, Inc. (21-23 Marlborough) | Robert G. Segel, trustee of 21-23 Marlborough Street Realty Trust | 18157 | 306 |
| 29Jun1989 | William F. Reilly, Beverly C. Chell, and Eleanor P. Vreeland, trustees, Katharine Gibbs Realty Trust (21-23 Marlborough) | Macmillan, Inc. | 15684 | 67 |
| 23Aug1956 | Katharine Gibbs School, Inc. (21-23 Marlborough) | Gordon Gibbs, Blanche L. Gibbs, and Edward L. Kane, trustees, Katharine Gibbs Realty Trust | 7208 | 376 |
| 03Sep1946 | James Gordon Gibbs, Mary M. Ryan, and Blanche L. Gubbs, trustees, Katharine Gibbs Realty Trust (confirmatory deed; 21-23 Marlborough) | Katharine Gibbs School, Inc. | 6338 | 80 |
| 03Sep1946 | James Gordon Gibbs, Mary M. Ryan, and Blanche L. Gubbs, trustees, Katharine Gibbs Realty Trust (21-23 Marlborough) | Katharine Gibbs School, Inc. | 6236 | 82 |
| 04Aug1936 | Institution for Savings in Roxbury and its Vicinity (21-23 Marlborough) | James Gordon Gibbs, Mary M. Ryan, and Blanche L. Gibbs, trustees, Katharine Gibbs Realty Trust | 5616 | 570 |
| 19Mar1936 | T. Morris Murray and Eleanor V. Murray, husband and wife (foreclosure deed; 21-23 Marlborough) | Institution for Savings in Roxbury and its Vicinity | 5589 | 285 |
| 16Aug1919 | Robert Winsor and Eleanor M. Winsor, his wife, in her own right (21-23 Marlborough) | Eleanor V. Murray, wife of T. Morris Murray | 4163 | 36 |
| 31May1905 | Minna Wesselhoeft and Selma Wesselhoeft | Eleanor M. Winsor, wife of Robert Winsor | 3047 | 200 |
| 29Sep1886 | Lorenzo N. Kettle | Minna Wesselhoeft and Selma Wesselhoeft | 1742 | 201 |
| 03Dec1877 | Elias Merwin, James J. Storrow, and Benjamin R. Curtis, trustees under the will of Benjamin R. Curtis | Lorenzo N. Kettle | 1406 | 12 |
| 14May1868 | Mary Anne Hayward | Benjamin R. Curtis | 926 | 28 |
| 10Oct1867 | Charles W. Freeland | Mary Anne Hayward | 910 | 153 |
| Transfers of Unimproved Land | ||||
| Date of Deed | Grantor | Grantee | Book | Page |
| 01Sep1865 | William R. Lawrence (lot with 100 foot frontage) | Charles W. Freeland | 865 | 17 |
| 08Jan1863 | Ebenezer Rockwood Hoar (lot with 27 foot frontage) | William R. Lawrence | 821 | 227 |
| 07Jan1863 | Theophilus Parsons (lot with 73 foot frontage) | William R. Lawrence | 821 | 210 |
| 06Nov1858 | George Goss (lot with 75 foot frontage) | Ebenezer R. Hoar | 747 | 19 |
| 06Nov1858 | George Goss (lot with 73 foot frontage) | Theophilus Parsons | 747 | 18 |
| 06Nov1858 | Commonwealth of Massachusetts (Lot with 421 foot frontage) | George Goss | 747 | 1 |
| Party Wall Agreements | ||||
| Date | Party One | Party Two | Book | Page |
| 22Mar1865 | William R. Lawrence (owner of lot at 21 Marlborough) | Isaac H. Spring (owner of lot at 19 Marlborough) | 865 | 292 |