Products
- Laramie, Hahns Peak and Pacific Railway Company
- Lasker Finance Corporation
- Laurel Cannel Coal & Oil Company of Baltimore
- Lawrence Mining and Smelting Company
- Lawrence Rail Road Company
- Lazare Kaplan International Inc.
- Lear Jet Corporation
- Lear Jet Industries, Inc.
- Lehicton Oil Company
- Lehigh & Hudson River Railroad Company (Issued to and Signed by Thomas C. Platt)
- Lehigh and Lake Erie Railroad Company
- Lehigh and New York Railroad Company
- Lehigh and Wilkes-Barre Coal Company
- Lehigh Coal and Navigation Company
- Lehigh Dock Company of Superior City, Wisconsin
- Lehigh Valley Harbor Terminal Railway Company
- Lehigh Valley Harbor Terminal Railway Company
- Lehigh Valley Harbor Terminal Railway Company
- Lehigh Valley Railroad Company
- Lehigh Valley Railroad Company
- Lehigh Valley Railroad Company
- Lehigh Valley Railroad Company
- Lehigh Valley Railroad Company
- Lehigh Valley Railroad Company
- Lehigh Valley Railroad Company
- Lehigh Valley Railway Company
- Lehigh Valley Terminal Railway Company
- Lehigh Valley Traction Company
- Lehigh Valley Transit Company
- Lehigh Valley Transit Company
- Lerner Stores Corporation
- Leslie Salt Co.
- Leslie-California Salt Co.
- Leslie-California Salt Co.
- Level Furniture Company
- Lewis American Airways, Inc. (Airomobile)
- Lewiston, Greene and Monmouth Telephone Company
- Lewiston, Greene and Monmouth Telephone Company
- Lewron Television, Inc. (Let's Make a Deal)
- Lexington Brewing Company
- Lexington Union Station Company
- Libby, McNeill & Libby (Libby's Canned Goods)
- Liggett & Myers Tobacco Company
- Liggett Group Inc.
- Lilloett, Fraser River & Cariboo Gold Fields Limited
- Lima Cord Sole and Heel Company
- Lincoln Building Corporation
- Lincoln Mortgage Investors
- Lincoln Motor Company (Signed by Wilfred Leland and William Nash)
- Lincoln National Bank of Bath (Maine)
- Lincoln Park Transportation Company (New Jersey Trolley & Amusement Park)
- Lincoln Printing Company
- Lincoln Theatre (Trenton, New Jersey)
- Ling-Temco-Vought, Inc.
- Ling-Temco-Vought, Inc.
- Lion Country Safari, Inc.
- Lionel Corporation
- Lionel Corporation
- Lit Brothers
- Little Falls & Dakota Railroad Company
- Little Maid Mining and Milling Company
- Little Miami & Cincinnati & Indiana Railroad Companies
- Little Miami Rail Road Company
- Little Miami Rail Road Company
- Little Miami Railroad Company
- Little Miami Railroad Company
- Little Miami Railroad Company
- Little Rock, Maumelle & Western Railroad Company
- Little Rock, Mississippi River and Texas Railway Company
- Locomobile Company of America
- Loew's Boston Theatres, Inc.
- Loew's Theatres, Inc.
- Loew's Theatres, Inc.
- Loft Incorporated (Candy)
- Lombard and South Streets Passenger Railway Company (Signed by Moses Dropsie)
- Lone Pine Surprise Consolidated Mining Co.
- Lone Star Broadcast Company
- Long Beach Amusement Company (The Pike)
- Long Beach Pleasure Pier Company (The Pike)
- Long Dock Company
- Long Horn Oil Company
- Long Island Electric Railway Company
- Long Island Lighting Company
- Los Angeles and Vernon Street Railway Company
- Los Angeles and Vernon Street Railway Company
- Los Angeles Consolidated Electric Railway Company (Signed by Moses Hazeltine Sherman)
- Los Angeles, City of
- Los Angeles, Pasadena and Glendale Railway Company
- Los Angeles, Pasadena and Glendale Railway Company
- Lott Hotels, Inc. (Chicago)
- Louisiana and Missouri River Railroad Company
- Louisiana Land and Exploration Company
- Louisiana, State of, Signed by Governor Murphy James Foster
- Louisiana, State of, Signed by Governor William Wright Heard
- Louisville and Nashville Rail Road Company
- Louisville and Nashville Railroad Company
- Louisville and Nashville Railroad Company
- Louisville and Nashville Railroad Company
- Louisville and Nashville Railroad Company
- Louisville and Northern Railway and Lighting Company (Signed by Samuel Insull)