| | Date | Description | Box | MSA Citation |
| Details | 1908-1919 | Mayor Preston Administrative Files, 1 | 122 | BRG9-15-1 |
| Details | 1908-1919 | Mayor Preston Administrative Files, 2-3 | 123 | BRG9-15-2 |
| Details | 1908-1919 | Mayor Preston Administrative Files, 4 - 6(6) | 124 | BRG9-15-3 |
| Details | 1908-1919 | Mayor Preston Administrative Files, 6(7-20) | 125 | BRG9-15-4 |
| Details | 1908-1919 | Mayor Preston Administrative Files, 6(21-34) | 126 | BRG9-15-5 |
| Details | 1908-1919 | Mayor Preston Administrative Files, 6(35-37) - 7 | 127 | BRG9-15-6 |
| Details | 1908-1919 | Mayor Preston Administrative Files, 13 - 14D(1) | 128 | BRG9-15-7 |
| Details | 1908-1919 | Mayor Preston Administrative Files, 14D(2) - 16(1-3) | 129 | BRG9-15-8 |
| Details | 1908-1919 | Mayor Preston Administrative Files, 16(4-11) - 16A(1-6) | 130 | BRG9-15-9 |
| Details | 1908-1919 | Mayor Preston Administrative Files, 16B - 18(1-4) | 131 | BRG9-15-10 |
| Details | 1908-1919 | Mayor Preston Administrative Files, 18 - 20E | 132 | BRG9-15-11 |
| Details | 1908-1919 | Mayor Preston Administrative Files, 20E(13-14) - 23 | 133 | BRG9-15-12 |
| Details | 1908-1919 | Mayor Preston Administrative Files, 24-41 | 134 | BRG9-15-13 |
| Details | 1908-1919 | Mayor Preston Administrative Files, 41A(1-12) | 135 | BRG9-15-14 |
| Details | 1908-1919 | Mayor Preston Administrative Files, 41A(13-23) - 45(1) | 136 | BRG9-15-15 |
| Details | 1908-1919 | Mayor Preston Administrative Files, 45-47 | 137 | BRG9-15-16 |
| Details | 1908-1919 | Mayor Preston Administrative Files, 47B - 49B(1-6) | 138 | BRG9-15-17 |
| Details | 1908-1919 | Mayor Preston Administrative Files, 49B(7-11) - 49C(1-9) | 139 | BRG9-15-18 |
| Details | 1908-1919 | Mayor Preston Administrative Files, 49C(10-12) - 49F(1-2) | 140 | BRG9-15-19 |
| Details | 1908-1919 | Mayor Preston Administrative Files, 49F(3-4) - 53 | 141 | BRG9-15-20 |
| Details | 1908-1919 | Mayor Preston Administrative Files, 53A - 53C(1-2) | 142 | BRG9-15-21 |
| Details | 1908-1919 | Mayor Preston Administrative Files, 53C(3-4) - 59A | 143 | BRG9-15-22 |
| Details | 1908-1919 | Mayor Preston Administrative Files, 59B - 59D(1-2) | 144 | BRG9-15-23 |
| Details | 1908-1919 | Mayor Preston Administrative Files, 59D(3-4) - 62 | 145 | BRG9-15-24 |
| Details | 1908-1919 | Mayor Preston Administrative Files, 62A - 63 | 146 | BRG9-15-25 |
| Details | 1908-1919 | Mayor Preston Administrative Files, 63A - 66A | 147 | BRG9-15-26 |
| Details | 1908-1919 | Mayor Preston Administrative Files, 66B - 66D | 148 | BRG9-15-27 |
| Details | 1908-1919 | Mayor Preston Administrative Files, 66E - 68B | 149 | BRG9-15-28 |
| Details | 1908-1919 | Mayor Preston Administrative Files, 68C - 68E(1-5) | 150 | BRG9-15-29 |
| Details | 1908-1919 | Mayor Preston Administrative Files, 68E(6-8) - 69 | 151 | BRG9-15-30 |
| Details | 1908-1919 | Mayor Preston Administrative Files, 72 - 74(1-4) | 152 | BRG9-15-31 |
| Details | 1908-1919 | Mayor Preston Administrative Files, 74(5-6) - 79 | 153 | BRG9-15-32 |
| Details | 1908-1919 | Mayor Preston Administrative Files, 80-91 | 154 | BRG9-15-33 |
| Details | 1908-1919 | Mayor Preston Administrative Files, 91A - 95(1-2) | 155 | BRG9-15-34 |
| Details | 1908-1919 | Mayor Preston Administrative Files, 95(3-4) - 121 | 156 | BRG9-15-35 |
| Details | 1908-1919 | Mayor Preston Administrative Files, 132-506 | 157 | BRG9-15-36 |
| Details | 1908-1919 | Mayor Preston Administrative Files, 507 - 511(1-2) | 158 | BRG9-15-37 |
| Details | 1908-1919 | Mayor Preston Administrative Files, 511(3-8) - 514 | 159 | BRG9-15-38 |
| Details | 1908-1919 | Mayor Preston Administrative Files, 515-520 | 160 | BRG9-15-39 |
| Details | 1908-1919 | Mayor Preston Administrative Files, 521-527 | 161 | BRG9-15-40 |
| Details | 1908-1919 | Mayor Preston Administrative Files, 528 | 162 | BRG9-15-41 |
| Details | 1908-1919 | Mayor Preston Administrative Files, 529-533 | 163 | BRG9-15-42 |
| Details | 1920 | Mayor Preston Administrative Files "Baltimore Harbor Vol. II Industries on Waterfront" Harbor Board of Baltimore | | BRG9-15-43 |
| Details | 1908-1919 | Mayor Preston Administrative Files, Oversized. Legacy Accession Numbers refer to descriptions of other files in BRG 9-15. Information in Brackets refers to series description in an index in the Baltimore City Archives search room. | 1 | BRG9-15-44 |
| Details | 1908-1919 | Mayor Preston Administrative Files, Oversized. Legacy Accession Numbers refer to descriptions of other files in BRG 9-15. Information in Brackets refers to series description in an index in the Baltimore City Archives search room. | 2 | BRG9-15-45 |
| Details | 1908-1919 | Mayor Preston Administrative Files, Photographs | | BRG9-15-46 |