Series 51  Miscellaneous Records, 1840-1916 
Series 52  County Clerk Subject Files, 1940-1981 
Series 53  County Clerk Correspondence and Memos, 1939-1981 
Series 54  County Clerk Financial Records, 1956-1982 
Series 55  County Clerk Reports, 1940-1980 

Series 56  County Clerk Personnel Records, 1947-1982 
Series 57  Land Records Division Miscellaneous Records, 1957-1980 
Series 58  Land Records Division Reports, 1962-1981 
Series 59  Court Administration Miscellaneous Records, 1948-1981 
Series 60  Legal Division Miscellaneous Records, 1896-1982 

Series 61  Motor Vehicles Division Miscellaneous Records, 1958, 1965-1982 
Series 62  Records and Archives Division Miscellaneous Records, 1968-1981 
Series 63  Collector's Bonds Register, 1868-1916
Series 64  Historic American Buildings Survey Drawings, 1933 
Series 65  Transcripts of Judgments, Decrees and Executions, 1813-1932

Series 66  Transcripts of Judgments, Decrees and Executions Index, 1813-1911 
Series 67  Collector's Bonds Index, 1868-1969 
Series 68  Blind Brook Construction Records, 1980 
Series 69  Parks Department Correspondence, 1922-1943 (bulk 1922-1935) 
Series 70  Parks Department Administrative Records, 1922-1969 (bulk 1924-1932) 

Series 71  Court Administration Financial Records, 1956-1973
Series 72  Parks Department State and National Matters, 1922-1941 (bulk 1922-1935) 
Series 73  Insurance Agents Certificates Index, 1912-1922 
Series 74  Coroner's Inquests Index, 1886-1925 
Series 75  Board of Canvassers Records, 1822-1833 

Series 76  Commissioners of Partition Records, 1774 
Series 77  Commissioners of Highways Records, c.1720-1795, 1826 
Series 78  Religious Societies Incorporations, 1784-1909 
Series 79  Unassigned 
Series 80  Unassigned

Series 81  Practical Nurses Register, 1938-1946 
Series 82  Professional Engineers Register, 1947-1951 
Series 83  Board of Acquisition and Contract Minutes, 1939-1978, 1980-1989 
Series 84  Airport Construction Files, 1937-1946 
Series 85  Board of Elections Correspondence, 1940-1968 

Series 86  Mortgages, 1755-1861 
Series 87  Veterans' Discharges, c.1920-1985 
Series 88  Parks Department Correspondence and Studies, 1925-1975 
Series 89  Park Commission Agenda, 1943-1961 
Series 90  Park Commission Minutes Index, c.1926-1960 

Series 91  Park Commission Minutes, 1922-1962 
Series 92  Recreation Commission Minutes, 1959-1960 
Series 93  Parks, Recreation and Conservation Board Minutes, 1962-1978 
Series 94  Bronx Valley Sewer Commission Final Report, 1896 
Series 95  Bronx Parkway Commission Annual Reports, 1907-1925 (gaps) 

Series 96  Park Commission Annual Reports, 1924-1953 (gaps)
Series 97  Recreation Commission Annual Reports, 1925-1961 (gaps) 
Series 98  Parks Department Clippings, 1918, 1922-1936, 1970-1971, 1976-1989, 1991, 1997-2008
Series 99  Parks Department Map Index, c.1925-1932 
Series 100  Edwin G. Michaelian Collection: County Executive Records, Invitations and Thank-Yous, 1958-1974

Series 1  Farm Names Register, 1912-1949 
Series 2  Podiatrist Register, 1895-1951
Series 3  Board of Elections Hotel Register, 1967-1977 
Series 4  Architects Register, 1919-1951 
Series 5  Statute Foreclosures Notices, 1857-1938 

Series 6  Declaration of Intention Record Books, 1855-1906 
Series 7  Oaths of Office, 1789-1968 (gaps) 
Series 8  Works Progress Administration Survey, 1936-1940 
Series 9  Court of Common Pleas Minutes, 1710-1846 
Series 10  Internal Archives Collection 

Series 11  Naturalization Petitions, 1895-1991 
Series 12  Unassigned 
Series 13  Naturalization Record Books, 1844-1906 
Series 14  Naturalization Petitions, Rejected, 1898-1906 
Series 15  Naturalization Records, Miscellaneous, 1808-1924   

Series 16  Estate Records, 1775, 1782-1921 
Series 17  New York City Indexes to Deeds, Releases, Mortgages, and Assignment of Mortgages, 1898-1921
Series 18  Unassigned 
Series 19  Census Rolls (New York State), 1905, 1915, 1925 
Series 20  Miscellaneous Historic Records Collection, 1918, 1932, 1983   

Series 21  Hugh R. Pomeroy Collection, 1926-1966 
Series 22  Planning Board Minutes, 1939-1983 
Series 23  Interstate 684 Records, 1960-1967 
Series 24  Courthouse Development Committee Records, 1915, 1948-1968 
Series 25  Edwin G. Michaelian Collection: Pre-County Executive Records, 1895-1969 (bulk 1943-1957) 

Series 26  Edwin G. Michaelian Collection: County Executive Records, 1958-1984 (bulk 1958-1973)
Series 27  Edwin G. Michaelian Collection: Post-County Executive Papers, 1974-1984 
Series 28  Unassigned 
Series 29  Edwin G. Michaelian Collection: Memorabilia and Certificates, c. 1896-1983 
Series 30  Edwin G. Michaelian Collection: Audiovisual Materials, c.1980-1982

Series 31  Edwin G. Michaelian Collection: Scrapbooks and Clippings, 1939, 1949, 1951-1983
Series 32  Election Notices, 1892-1895 
Series 33  Declarations of Intention, 1906-1980 
Series 34  Deeds Index, Grantor, 1680-1931 
Series 35  Commissioners of Forfeiture Proceedings, 1784-1786 

Series 36  Foreign Notaries, 1884-1944 
Series 37  Homestead Exemptions, 1850-1978 
Series 38  Dentists Register and Affidavits, 1941-1950
Series 39  Dental Hygienists Affidavits, 1947-1950 
Series 40  Osteopaths Register and Affidavits, 1904-1943 

Series 41  Horseshoers Register, 1899-1904 
Series 42  Oaths of Office Index, c.1845-1886 
Series 43  Court of Sessions Minutes, 1684-1895 
Series 44  Westchester County Tricentennial Committee Records, 1980-1983 
Series 45  Incorporation Records, 1875, 1881-1926 

Series 46  Assumed Business Names Index, 1900-1933 
Series 47  Deeds, 1684-1930 
Series 48  Bicentennial Commission of Westchester County Records, 1950, 1973-1981 (bulk 1974-1976) 
Series 49  Board of Elections Bills and Expenses, 1912-1956 
Series 50  Parks Department Historic Facts File, ca. 1850-1990 (bulk 1920s-1930s)

Subject Index W

Watershed Condemnation Proceedings, 1883-1917 (Series 111) 

Weights and Measures, Department of Consumer Affairs

       Publicity Clippings, 1960-1990 (bulk 1973-1990) (Series 274) 

Westchester 2000, 1971-1998 (Series 275)

Westchester 2000 Commission and Affiliated Organizations, 1984-1995 (Series 305)

Westchester 2000 -- Sal Prezioso Collection, 1957-1997 (bulk 1984-1988)  (Series 281) 

Westchester Academic Library Directors Organization (WALDO)

       Miscellaneous Articles, Lists and Reports, 1981-1990 (bulk 1985-1990)  (Series 196) 

       Narratives, Correspondence and General Meeting Minutes, 1983-1990  (Series 194) 

       Subcommittee Files, 1987-1990  (Series 195) 

Westchester County Archives, Research Articles Based on Collections, (Series 298)

Westchester County Atlases Collection, 1867-1984 (gaps) (Series 315)

Westchester County Association Records (Pforzheimer Papers) , 1950-1952  (Series 161)

Westchester County Building Commission – Courthouse Construction Records, March 1915-November 1916 (Series 389)

Westchester County Control Survey 

       Department of Public Works Files, ca. 1930s-early 1950s (Series 268)

       Photographs, 1934-1936

       Reports, 1939, 1941, 1944 (Series 170)    

Westchester County Council of Social Agencies Records (Pforzheimer Papers), 1933-1959 (Series 160) 

Westchester County Government

       Publications, 1901-present (Series 200)

       Videos and DVDs, 1980s-present (Series 306)

Westchester County Library System Records (Pforzheimer Papers) , 1936, 1939, 1945-1956 (Series 156) 

“Westchester County News” [Press Releases], April 1955-September 1961 (Series 365)

Westchester County Tricentennial Committee Records, 1980-1983  (Series 44)

Westchester Cross County Parkway Authority Calendars and Minutes, 1944-1948 (Series 320)

Wills, 1775-1784 (gaps), 1787-1941  (Series 132) 

Women, Office for, 1980-1995 (Series 269)

Works Progress Administration   

       County Clerk's Office Survey Records Inventory, 1936-1940  (Series 8) 

       Veterans' Cemetery Records, Revolution to World War I  (Series 181)

       Veterans' Cemetery Survey Forms - Photocopies, 1928-1938 (Series 294) 

World War I Alien Registration Forms, 1918 (Series 373)

Subject Index X-Z

Youth Services Division Records, Office of the County Executive, 1959-1975 (bulk 1962-1972) (Series 376)

Subject Index T

Tavern Recognizances, 1797-1800  (Series 226)

Tax Receipts, 1714-1757  (Series 134) 

Tax Sales and Tax Registers, 1862-1914 (gaps) (Series 356)

Testamentary Letters, 1830-1897 (Series 201) 

Trademarks, 1925-1954 (Series 155)

Transcripts of Judgements 

       Decrees and Executions, 1813-1932 (Series 65) 

       Decrees and Executions Index, 1813-1911 (Series 66) 

Subject Index U

Subject Index V

Vehicle Saftey Program Slide Collection, c.1978-1990 (Series 283)

Veterans

       Discharges, c.1920-1985 (Series 87)

       Peddler Licenses, 1955-1970, 1974-1983 (Series 324)

       Works Progress Administration Cemetery Records, American Revolution to
       World War I (Series 181) 

Voter Enrollments, 1929-1971 (Series 102) 

Voter Registration Books, 1925-1956  (Series 190)