The collection consists of the Safe Water Book, loose filters, and a Tasita, a filter holder that connects two bottles together, created by chemist and inventor, Theresa Dankovich.

A New York bookseller, Warshaw assembled this collection over nearly fifty years. The Warshaw Collection of Business Americana: Accounting and Bookkeeping forms part of the Warshaw Collection of Business Americana, Subseries 1.1: Subject Categories. The Subject Categories subseries is divided into 470 subject categories based on those created by Mr. Warshaw. These subject categories include topical subjects, types or forms of material, people, organizations, historical events, and other categories. An overview to the entire Warshaw collection is available here: Warshaw Collection of Business Americana

The papers document the life and work of William R. Hutton, a civil engineer during the late 1800s to the early 1900s. Materials include diaries, notebooks, correspondence, letterpress copy book, printed materials, publications, specifications, photographs, drawings, and maps that document the construction of several architectural and engineering projects during this period. Most notable are the records containing information related to the construction of the Chesapeake and Ohio Canal, Hudson River Tunnel, the Washington Aqueduct, the Kanawha River Canal, and the Washington/Harlem River Bridge. There are also several records about railroads in the state of Maryland, the District of Columbia and elsewhere, including the Western Maryland Railroad, Baltimore and Ohio Railroad, Colorado Midlands Railway, Baltimore and Drum Point Railroad, the Northern Adirondack Railroad, and the Pittsfield and Williamstown Railroad. The records can be used to track the progression of these projects, and engineering innovation during the late 1800s to the early 1900s.

The Cummings Structural Concrete Company Records consists primarily of correspondence and business records documenting Robert A. Cummings' firm, consulting work, and participation in professional associations, especially the American Society of Civil Engineers, 1892-1893, circa 1900-1939; technical data and publications on soils testing, 1900-1939;...

Contains entries by engineering firms and U.S. and local government entities in the AAEE annual competition, "Excellence in Environmental Engineering". The competitions are divided into categories: research, planning, design, operations/management, small projects, and university research. Each entry includes technical descriptions of the project, t...

The collection documents the history of instrumentation through catalogs, bulletins, specification sheets, price lists, and other publications of companies that produce instrumentation.

These records primarily document the administration of contracts and grants supporting the Satellite Tracking Program, Project Celescope, the Meteor Research Program, and the Gravitational Redshift Space Probe Experiment. Also included are files documenting other contracts and grants, mostly with the National Aeronautics and Space Administrati...

This accession consists of memoranda, blueprints, drawings, specifications, and correspondence. Museums and facilities documented in this accession include the National Museum of Natural History, the Smithsonian Institution Building, the Arts & Industries Building, the Silver Hill Facility, the National Museum of American History, the Ame...

This record unit consists of project files documenting the repairs, improvement, and renovation of existing Smithsonian buildings. The records include memoranda with Smithsonian offices, correspondence with contractors, blueprints, cost analyses, specifications, and photographs. Buildings and museums documented in this collection include: the...

The papers of painter, collage artist, and printmaker Nancy Spero measure 27.5 linear feet and are dated 1940s-2009. Biographical materials, correspondence, interviews, writings, subject files, personal business records, printed material, and photographic materials provide an overview of her exhibitions, major projects, and personal life. Also documented is her interest and participation in political movements and social issues including anti-war, women's rights, animal rights, repressive regimes, and the treatment of political prisoners.