Subject
- Labor unions--New York (State)1
- Labor unions--Organizing--New York (State)1
- Labor unions--Recognition--New York (State)1
- Laboratory Notes1
- Laboratory notebooks1
- Law--United States--Territories and possessions1
- Learned institutions and societies1
- Learned instiutions and societies1
- Lecture notes1
- Ledgers1
- Ledgers (account books)1
- Legal Correspondence1
- Legislative reporting--New York (State)1
- Lethal injection (Execution)--United States1
- Letters1
- Letters (correspondence)1
- Library fund raising--United States1
- Library outreach programs--United States1
- Lithographs1
- Lobbying1