Collection includes bulletins, reports, maps and informational booklets and brochures pertaining to the Great Flats Aquifer in Schenectady County, NY. Also includes documents relating to the environmental impact of gravel mining, descriptive booklets for various wetlands of New York State, and documents and lists by Vincent Schaefer concerning the Great Flats area.

Papers of several families related to John and Abigail Adams, including the families of Reverend William Smith, Richard Cranch, William Cranch, Christopher Pearse Cranch, Daniel Greenleaf, and John Greenleaf. This collection contains correspondence, bills of sale, maps, estate records, and property records.

This collection contains the research files of Florence Christoph. Research notes are on various Albany families such as Winne, Schuyler and the Van Rensselaers. There are no specific dates for when the research was undertaken, but the estimated dates are from the 1960s through the early 2000s. The researched information dates as far back as the late 1600s through the early 1900s.

This collection contains material regarding the Fort Orange Garden Club such as minutes and reports from meetings, genealogies, general histories, personal histories, membership lists, projects, flower shows, public works, newspaper articles, awards, magazines, scrapbooks, maps, memorabilia, photographs, and slides.

Harmen Harmanse was the patriarch of the Gansevoort family in Albany, New York, arriving in the area by 1657. Although not the first Ten Eyck in America, Jacob C. Ten Eyck was the first to come to Albany, moving from Manhattan after 1654. The two families intermarried several times over the years, along with other Dutch families in the area. This collection includes correspondence, financial records, estate records, and other family-related information.

This collection, which dates from 1740-2004, includes dozens of hand drawn maps, and maps with engravings, most of them originals, as well as bound atlases, representing the City of Hudson and its immediate surrounding area, including Columbia County and portions of adjacent counties as well as New York State. These items contain important information about the history of Hudson and the surrounding region – from insurance and railroad maps, topographical and geological maps, to bird’s eye view drawings and developmental proposals. The collection also includes maps that provide information about The Hudson River as a site of commerce, industry, travel, and tourism, as well as wildlife and residential life, since the settling of the city of Hudson. The collection features maps and bound atlases from a multitude of important historic publishers, including Beers, Ellis & Co.; H.H. Rowley & Co; F.W. Beers; Hudson River Sloop Clearwater; The Sanborn Map Company; and Frank E. Richards, among others.

The Hun family were descendants of 17th century Dutch settlers who became prominent and acquired property in and around the Albany area. This collection includes family papers.

This collection comprises papers created and compiled by James Frost (1783-1851), a surveyor who worked in Albany, Schenectady, Montgomery, and Schoharie counties.

Business and legal papers of Stephen Lush, Albany financier and politician, and Richard Lush, Albany merchant and civil servant, including agreements, receipts, property records, notes, bills, maps, correspondence, and leases. Some concern land owned in central and western New York which they had purchased from Revolutionary War veterans.

Henry Van Houten Onderdonk (1815-1886) was born to Peter and Eleanor Chatterton Onderdonk. He married twice and had five children with his second wife, Sarah Potter Mitchell Onderdonk.