1975-1995 Office for the Disabled Records (Series 273)
1975-1995 Office for the Disabled Subject Files (Series 363)
1976-1978 Planning Department Correspondence and Memos, 1976-1978 (Series 317)
1977-2010 (bulk 1990s) Parks, Recreation and Conservation Biodiversity Studies (Series 347)
1978-1980, 1982-1986 Board of Acquisition and Contract Calendars (Series 378)
1978-1988 (bulk 1982-1987) Andrew O’Rourke Administrative Files (Series 392)
c.1978-1990 Public Works Vehicle Safety Program Slide Collection (Series 283)
1979-1988 (bulk 1982-1988) Playland Administrative Records (Series 371)
1980s-present Westchester County Government Videos and DVDs (Series 306)
1980 Blind Brook Construction Records (Series 68)
c.1980-1984 Edwin G. Michaelian Collection: Audiovisual Materials (Series 30)
1980-1983 Westchester County Tricentennial Committee Records (Series 44)
1980-1995 Office for Women (Series 269)
1981-1990 (bulk 1985-1990) WALDO: Miscellaneous Articles, Lists and Reports (Series 196)
1982-2001 Historic Building Inventory Forms (Series 214)
1983-1985 Historic Records Advisory Committee Records (Series 204)
1983-1986 Planning Department Correspondence and Progress Reports (Series 366)
1983-1990 WALDO: Narratives, Correspondence and General Meeting Minutes (Series 194)
1983-2006 (bulk 1990-1998, 2001-2005) Board of Legislators News Clippings and Press Releases (Series 340)
1984 Charles Point Resource Recovery Facility Photograph Album (Series 318)
1984-1994 County Historian Videotape Collection (Series 293)
1984-1995 Westchester 2000 Commission and Affiliated Organizations (Series 305)
1984-2006 (bulk 1990s-2003) Division of Public Health Education and Information Materials (Series 332)
1986-1989 Department of Correction Scrapbook (Series 307)
1986-1995 Board of Legislators: Daniel P. Thomas Files (Series 399)
1987-1990 WALDO: Subcommittee Files (Series 195)
1987-1995 County Historian Files (Series 289)
1987-2011 Research Articles Based on the Collections of the Westchester County Archives (Series 298)
1988-1990, 2012 Building Plans -- Archives and Records Center - Access Restricted (Series 267)
1988-2013 Senior Programs and Services Files (Series 401)
1990-present Board of Legislators Meeting Videos (Series 213)
1994-2006 Health Department Press Releases (Series 331)
1997-2000 (gaps) Office of Communications Newspaper Clipping Files (Series 330)
1998-2009 African American Advisory Board Records (Series 402)