 Klaus Reprint Co. USA | 1 | 1973 |
| Knickerbocker USA | 1 | |
| Knickerbocker Press USA | 1 | 1895 |
| Knightsbridge Publishing USA | 1 | 1991 |
| Kodansha International USA | 1 | 1997 |
| Koneman & Aperture Foundation USA | 1 | 1997 |
| Kratville Publisher USA | 1 | 1976 |
| Kroshka Books USA | 1 | 2000 |
| L-W Book Sales USA | 1 | 1994 |
| LAK Publishing USA | 1 | 2020 |
| Lake View Press USA | 1 | 1983 |
| Landoll USA | 1 | 1993 |
| Lane Book Company USA | 1 | 1961 |
| Lane Group LLC USA | 1 | 2014 |
| Lane Magazine & Book Company USA | 1 | 1972 |
| Lang Books USA | 1 | 1999 |
| Lantern Books USA | 1 | 1964 |
| Latham Publishing USA | 1 | 1974 |
| Laurel USA | 1 | 1989 |
| Lee & Low Books Inc. USA | 1 | 1998 |
| Legacy Books USA | 1 | 2010 |
| Legal Classics Library USA | 1 | 1983 |
| Leisure Arts USA | 1 | 1998 |
| Leisure Books USA | 1 | 1974 |
| Lenahan USA | 1 | 1974 |
| Lenox Hill USA | 1 | 1971 |
| Leslie-Judge Co. USA | 1 | 1919 |
| Lev Gleason USA | 1 | 1949 |
| Light Gallery Books USA | 1 | 1975 |
| Lightning Source USA | 1 | 2015 |
| Limited Editions Club USA | 1 | 1977 |
| Links Books USA | 1 | 1974 |
| Literary Guild USA | 1 | 1938 |
| Little, Brown USA | 1 | 2013 |
| Little, Brown Spark USA | 1 | 2019 |
| Little, Brown Young Readers USA | 1 | 1990 |
| Liverpool Revolution USA | 1 | 2014 |
| Living Art Publications USA | 1 | 2014 |
| Living Language USA | 1 | 1993 |
| Living Planet Press USA | 1 | 1991 |
| Lloyd J. Short USA | 1 | 1989 |
| Llumina Press USA | 1 | 2005 |
| Llumina Stars USA | 1 | 2011 |
| Lockridge Press USA | 1 | 2018 |
| Logos International USA | 1 | 1979 |
| Long Eagle Publishing Company USA | 1 | 2005 |
| Long Shadow Books USA | 1 | 1983 |
| Longmans, Green, And Co. USA | 1 | 1909 |
| Lorell Press USA | 1 | 1983 |
| Los Angeles Railroad Heritage Foundation USA | 1 | 2019 |
| Lothrop Publishing Company USA | 1 | 1899 |
| Lothrop, Lee & Shepard Books USA | 1 | 1980 |
| Lothrop, Lee & Shepard Co. USA | 1 | 1910 |
| Louis Tannen Inc. USA | 1 | 1975 |
| Louise Brooks Society USA | 1 | 2017 |
| Love Spell USA | 1 | 2004 |
| Lowe USA | 1 | 2002 |
| Lowe & B. Hould USA | 1 | 2001 |
| Lulu Enterprises USA | 1 | |
| Lulu Press USA | 1 | 2014 |
| Lumina USA | 1 | 2000 |
| Lyle Stuart USA | 1 | 1987 |
| M. Bulnes Book Company USA | 1 | 1916 |
| M.A. Donohue & Co. USA | 1 | 1910 |
| M.T. Publishing Company USA | 1 | 2025 |
| MAC USA | 1 | 1984 |
| Mac-Mat USA | 1 | 1991 |
| Macmillan Library Reference USA | 1 | 1996 |
| Macoy Publishing And Masonic Supply Company USA | 1 | 1909 |
| Macy-Masius The Vanguard Press USA | 1 | 1928 |
| Mad Creek USA | 1 | 2020 |
| Made Simple Books USA | 1 | 1959 |
| Magic Inc. USA | 1 | 1996 |
| MagicImage Filmbooks USA | 1 | 1989 |
| Magnum / Prestige USA | 1 | 1975 |
| Maher Ventriloquist Studios USA | 1 | 1979 |
| MainSail Press USA | 1 | 1993 |
| Making All Stops USA | 1 | 2009 |
| Mango Media USA | 1 | 2015 |
| Manic D Press USA | 1 | 2007 |
| Mankind Publishing USA | 1 | 1970 |
| Marco Polo USA | 1 | |
| Marian K. Towne USA | 1 | 1996 |
| Marine Publishing Company. USA | 1 | 1973 |
| Marion Boyars USA | 1 | 1981 |
| Mark V. Ziesing USA | 1 | 1995 |
| Marlowe & Company USA | 1 | 1998 |
| Marship Publications USA | 1 | 1977 |
| Marsilio USA | 1 | 1992 |
| Marvel Books USA | 1 | 1983 |
| Marvel Masterworks USA | 1 | 2002 |
| Mascot USA | 1 | 2019 |
| Mason Crest USA | 1 | 2007 |
| Matt Holt USA | 1 | 2023 |
| Matthew Bender & Company USA | 1 | 1919 |
| Max Holden USA | 1 | 1946 |
| Maxton USA | 1 | 1946 |
| May-Murdock USA | 1 | 1985 |
| May-Murdock Publications USA | 1 | 1992 |
| Mayflower / Dell USA | 1 | 1966 |
| Mccall Publishing Company USA | 1 | 1971 |
| McFarland Classics USA | 1 | 1992 |
| Mel Bay Publications, Inc. USA | 1 | 2005 |
| Melcher Media USA | 1 | 2006 |
| Melmont Publishers, Inc, Chicago USA | 1 | 1965 |
| Mennonite Press USA | 1 | 1971 |
| Meredith Press USA | 1 | 1968 |
| Meridian Classic USA | 1 | 1984 |
| Merrigold Press USA | 1 | 1988 |
| Merrimac Publishing USA | 1 | 1986 |
| Messenger Records USA | 1 | 2002 |
| Metal Blade USA | 1 | 2006 |
| Metro Books An Imprint Of Friedman Fairfax Publishing Group Inc USA | 1 | 1996 |
| Metro Books By Arrangement With Atlantic Publishing USA | 1 | 2008 |
| MetroBooks USA | 1 | 1995 |
| MGM Home Video USA | 1 | 1998 |
| MH Books USA | 1 | 2019 |
| Michael Bruce Associates, Inc. USA | 1 | 2001 |
| Michael Jordan Rush USA | 1 | 2009 |
| Microcosm Publishing USA | 1 | 2023 |
| MicroLogic Software USA | 1 | 1990 |
| Microsoft Press USA | 1 | 2001 |
| Midnight Oil USA | 1 | 2021 |
| Midnight Reader USA | 1 | 1963 |
| Midwestern State University Press USA | 1 | 2003 |
| Miller's USA | 1 | 1999 |
| Mitchell Brothers Publishing USA | 1 | 2017 |
| MJF Books USA | 1 | 2007 |
| Mmm Pie Publishing USA | 1 | 2021 |
| Moby Books USA | 1 | 1979 |
| Model Railroading USA | 1 | 1996 |
| Modern Icons USA | 1 | 1997 |
| Modern Promotions USA | 1 | 1973 |
| Modern Publishing USA | 1 | 1994 |
| Monarch Record Enterprises USA | 1 | 1992 |
| Montgomery Music Inc. USA | 1 | 1953 |
| Moon Publications Inc. USA | 1 | 1996 |
| Moonstone Books USA | 1 | 2009 |
| Mopcorps Publishing USA | 1 | 2018 |
| Moravian Church Provincial Synod USA | 1 | 1923 |
| Morgan James USA | 1 | 2009 |
| Morgan Library And Museum USA | 1 | 2018 |
| Morgan Reynolds USA | 1 | 2007 |
| Motive Power Services USA | 1 | 1978 |
| MoToR, The Automotive Business Magazine USA | 1 | 1937 |
| Motorbooks USA | 1 | 2008 |
| Mulholland Press USA | 1 | 2001 |
| Museum Of Glass USA | 1 | 2009 |
| Music Content Developers USA | 1 | 1997 |
| Music Corporation Of America USA | 1 | 1945 |
| Music House Publishing USA | 1 | 1983 |
| Music Mentor Books USA | 1 | 2006 |
| MusicGem USA | 1 | 2006 |
| Musicom International Publishing USA | 1 | 1996 |
| Nation Books USA | 1 | 2012 |
| National Association For Constitutional Government USA | 1 | 1923 |
| National Capital Trolley Museum Gift Shop USA | 1 | 1978 |
| National Council Of Teachers Of Mathematics USA | 1 | 1971 |
| National Geographic Kids USA | 1 | 2015 |
| National Geographic Society USA | 1 | 2008 |
| National Model Railroad Association USA | 1 | 2002 |
| National Park Services, U.S. Department Of The Interior USA | 1 | 1974 |
| National Railway Historical Society, Inc & Electric Railway Association, Inc. USA | 1 | |
| Nauck's Vintage Records USA | 1 | 1992 |
| Naval Institute Press USA | 1 | 1972 |
| NBM Graphic Novels USA | 1 | 2018 |
| Nelson USA | 1 | 1976 |
| Nelson Books USA | 1 | 2017 |
| Neptune USA | 1 | 2015 |
| New Age Publishing USA | 1 | 2024 |
| New Chapter Press USA | 1 | 2008 |
| New England Electric Railway Historical Society, Inc. USA | 1 | 1986 |
| New Harbinger USA | 1 | 2015 |
| New Horizon Press USA | 1 | 2008 |
| New Infinities / Ace USA | 1 | 1987 |
| New Media Books USA | 1 | 1985 |
| New York Review Comics USA | 1 | 2021 |
| New York Review Of Books USA | 1 | 2004 |
| News Alliance USA | 1 | 2007 |
| Newspaper Enterprise Association USA | 1 | 1977 |
| Newton Gregg USA | 1 | 1978 |
| Nick Lyons Books USA | 1 | 1984 |
| Night Shadow USA | 1 | 1966 |
| Nightengale Press USA | 1 | 2007 |
| Nightfire USA | 1 | 2024 |
| Nintendo Of America USA | 1 | 1993 |
| NMRA USA | 1 | 1972 |
| Nook Press USA | 1 | 2017 |
| Noonday Press USA | 1 | 1953 |
| Norken USA | 1 | 1986 |
| North Cape Publications USA | 1 | 2013 |
| North Light Books USA | 1 | 1987 |
| Northfield Publishing USA | 1 | 1995 |
| Northland Publishing USA | 1 | 2000 |
| NorthSouth Books USA | 1 | 2015 |
| Novel Books USA | 1 | 1960 |
| Novel Library USA | 1 | 1948 |
| NPR Classics USA | 1 | 1999 |
| NTC Publishing Group USA | 1 | 1996 |
| NWPRRHS USA | 1 | 2018 |
USA