This box contains a brief preface by Clough detailing the intentions of his project, an explanation of Clough's map numbering system, a brief biography of Clough, and a note by former MHS director Louis L. Tucker regarding the source of the material. Also included are four chapters of the unfinished manuscript on the history of Boston. Chapter 1 describes the Shawmut Peninsula at the time of settlement. Chapter 2 identifies settlers of Boston with brief biographies to 1633. There is a description of owners in 1633 keyed to the completed plate maps of the period. Chapter 3, 1633-1638, identifies residents based on church, colony, and town records. Chapter 4 is an incomplete description of Boston based on finished plate maps.

This volume contains Clough's explanation of the indexes, research notebooks, card index files, tax lists, census records for 1631-1634, and his history of Boston. Clough re-used a volume that contained accounts for the Antelope and Gold Mining Company, August 1880-June 1882.

Clough's atlas contains 60 pages depicting maps of 55 blocks of Boston neighborhoods with each map representing a block section showing property ownership in Boston based on the Direct Tax Census of 1798. The disbound volume also includes two studies of the accuracy of the 1722 Bonner map of Boston and a 1674 map of a North End neighborhood (block 100) based on the tax list of 1674.

This subseries contains Boston property notes or land title summaries arranged by block, from 100-4900, usually with a new lot beginning at the top of each page. The deeds for each lot are then arranged chronologically from the 1630s to 1798. For each deed recorded, the original Suffolk County deeds volume and page number is listed on the left side of the sheet, the date of the transaction and the names of the grantor and grantee in the center of the page, and a sketch of the lot with dimensions and abutters noted, to the right.

Box 5 and 6 contain block reconstruction research material for blocks numbered 300-4000. The research material consists of map tracings, numbered street charts, background research information, and reconstruction maps. The materials located in boxes 5 and 6 appear to be smaller renditions of the larger tracings located in the drawers 2-5. See block reconstruction maps (drawers 2-5) for more materials relating to specific blocks.

This subseries contains an index of long numbered sheet charts, arranged by street name, where Clough collated the information from deeds and other written sources with cartographic information to create his property ownership reconstructions. The long sheets use the street frontage as their horizontal dimension and specific property lots as their vertical dimension. Vertical lots are plotted based on their researched frontage dimension. The narrow vertical dimension of the sheets represent time, deed summary based on the date of transfer, grantor, grantee, and dimensions. Also see drawers 2-5 as numerous numbered street charts can be found there, filed by block number. Not every block is represented by a numbered street chart.

This subseries contains the second round of indexing that Clough performed. The land title summary information from these cards was transcribed onto larger sheets, which can be found in boxes 2-4 (arranged by lot, then chronologically). Index card boxes 1-10 contain an index of property owners arranged alphabetically by surname. Boxes 11-22 contain an index of property block and lots arranged by lot number but not necessarily in chronological order.

This subseries contains notebooks where Clough recorded his notes and transcriptions from books and repositories where he conducted his research. The majority of the volumes contain Clough's deed abstracts copied from the Suffolk County volumes. Several volumes are labeled "Town Dock" for years 1634-1656, 1661-1734, and 1743-1766, reflecting a different note-taking scheme, which Clough began, but later abandoned. The town dock information and property transfers are arranged chronologically and contain alphabetical lists of persons with biographical notes. The information in the volumes appears to have been copied onto index cards (IC boxes 1-22) and then onto larger paper, which can be found in Series II.A. Land Title Summaries (boxes 2-4).

This subseries contains an index to Boston inhabitants, 1630-1798, prepared by Clough for the purpose of keeping genealogical and biographical information on the first settlers of Boston from 1630 onward. The numbers in green located next to the names, mentioned in volume 4 (Clough's blue book), note the first settlers.

This subseries contains an index of every known resident in Boston from 1630. The numbers in green represent residents who lived in Boston prior to 1655 (there are about 1200 of these). The figures in fraction form (i.e. 116/4) represent the page and volume where the information was found in the Suffolk County deeds, with the top number representing the page and the bottom number representing the volume. Also included is the first known date the person was cited in the Suffolk County deeds.

This subseries contains records of the First Church of Boston, 1636-1755, copied by Clough, consisting of a list of church members and three corresponding numbers (green, black, and red). The green numbers represent citizens of Boston prior to 1655. The red and black numbers appear to be a count of residents listed in the volume.

This subseries contains miscellaneous research notes and notebooks. These include an alphabetical list of property owners; volume 1 of the Massachusetts Bay Colony records; a notebook entitled "Miscellaneous B" containing property notes and possibly taken from Suffolk County deed or Colony records; a notebook entitled "O" containing descriptive information about places in Boston, listed alphabetically; "Notebook 1" containing Clough family genealogy; "Book 29" containing an alphabetical list of property owners with two sets of unidentifiable index numbers; "Notes" containing research material with street names, property numbers, owners, and years of ownership; notebook fragments containing research materials for blocks 100-600 and miscellaneous research material. In a notebook containing information on people buried at King's Chapel in Boston, Mass., Clough notes the shapes of some gravestones, person interred, life dates, age, and the burial plot number, which correlates to a small map of King's Chapel in the notebook. Also contains a folder titled "Notes on Lynn Street" and a newspaper clipping with genealogical queries.

This subseries contains miscellaneous maps drawn and collected by Clough for his research.

This subseries includes Clough's annotated volumes of the Boston Record Commissioners publications, which contain Boston Records, 1634-1701, the Books of Possessions, Suffolk Deeds, Direct Tax of 1798, and the U.S. Census of 1790.

Clough's blue book contains an index of property lots with owner's name, index page number, valuation, and description of land for plates 1-11 of his 1798 atlas (located in oversize drawers). The volume also includes a list of children baptized, 1699-1733, and the ownership history of Clough family property, 1744-1823.

This subseries contains an index of property owners with plot numbers and of ownership.

This subseries contains an index of deeds copied in four volumes as they appear in the volumes of the Suffolk Registry. The first column of red figures indicates the corresponding notebook and page number where the property abstract can be found in boxes 8-11. The second column of figures indicates the property numbers on the text maps or plates drawn by Clough.

This subseries contains a miscellaneous notebook (formerly "order book") of preliminary work on the history of Boston estates and the inhabitants of Boston from 1630. There is no discernible order to this list of names, dates, biographical information, estate information, and copied notes from Boston and Suffolk County registers of deeds.

This subseries contains a miscellaneous notebook of approximately 3300 names, organized alphabetically. Each name has two different sets of unidentifiable index numbers.