- Mac & Jan
- MacDougal, Bill SEE: Old Fashioned Revival Hour Quartet
- Mace, Lee
- Macedonian Quartet
- Mack, Warner
- Mack And Jan SEE: Various Artists (Harvest); Various Artists (Tri-State Singing Conv.)
- Mac-o-chee Valley Folks SEE: Various Artists (Skinners Music Shop)
- Maddox, Rose
- Maddox Brothers & Rose
- Mae, Kennia SEE: Howell, Kennia May
- Magic Valley Quartet
- Magness, Tommy
- Magness Trio
- Magnifiers Quartet
- Magnolia State Quartet
- Magnuson, Charles SEE: Various Artists (Praise)
- Mahaffey, Boone
- Maharrey Family
- Mahurin, Mel
- Mainer, J.E.
- Mainer, Wade
- Majestics Quartet
- Male Quartet
- Mallett Brothers
- Mallie Anne & Slim
- Maltba Family Singers
- Manis Family
- Mann, Carylon
- Mann, Kitty
- Mann Family Singers
- Maphis, Joe
- Maple Leaf Quartet SEE: Harmoneers Quartet
- Maples, Roy SEE: Country Gospel Singers [Michigan]
- Marcell, Sonny
- Marcum Quartet
- Margaret & Spanck SEE: Faith Four
- Mariners Gospel Quartet
- Marion, Rev. C.G.
- Mark IV Quartet
- Marksmen [Georgia]
- Marksmen [Missouri]
- Marksmen [North Carolina]
- Markwood Brothers
- Marlowe, Edith & Sam
- Marlowe, Sam, Sr.
- Marsh Family Singers
- Marshall, Charles C.
- Marshall, S.
- Marshall, Sonny
- Marshall Family
- Martin, Buddy
- Martin, Carl
- Martin, Dude
- Martin, Ernest
- Martin, Faye SEE: Various Artists (Rubytone Sacred)
- Martin, James
- Martin, Jimmy
- Martin, Richard (Red)
- Martin, Slim
- Martin, Zane
- Martin Family
- Martin Sisters
- Mary Ann & All Star Quartette
- Mason, Junior
- Mason, Lowell
- Massengale Family
- Massey, Charlie
- Massey, Delbert
- Master-Workers Quartet
- Masters
- Masters, Sammy
- Masters Family
- Master's Keys
- Masters Musical Four
- Masters Quartet [Arizona]
- Masters Quartet [California]
- Masters Quartet [Georgia]
- Masters Quartet [Illinois]
- Masters Quartet [Maryland]
- Masters Quartet [North Carolina]
- Master's Quartet [Ohio]
- Masters Three
- Masters Trio [Georgia]
- Master's Trio [Virginia]
- Mathews, Harley
- Mathias Brothers Trio
- Mathis, Alfred
- Mathis, Johnny
- Mathis Family
- Matneys, Singing SEE: Singing Matneys
- Matthew Brothers
- Matthews, Jimmie Ruth
- Matthews, Lorne
- Matthews, Roberta
- Matthews Brothers Quartet
- Mattsville Quartet
- Mauldin Family
- Maxwell, Henry
- May, Grady
- May, Junior
- May Sisters
- Maybelle & Burley Trio
- Maynard, Fred
- Maynard, Irene SEE: Donna, Jean, & Irene
- Maynard Sisters Trio
- Mays, Jim SEE: Country Four Quartet
- Mays, Wilson, Jr.
- McAn, Tom Dee
- McAuliff, Leon, 11 SEE: Various Artists (Roy)
- McCall, Jim SEE: Various Artists (Skinners Music Shop)
- McCall Family
- McCartney, Jimmie
- McClain, Truzella
- McClaren, Boyd
- McClure Quartet
- McColl-Gerard Evangelistic Party
- McComas, Kenny SEE: Southland Gospel Trio [California]
- McComas Quartet
- McCool, Billy & Betty
- McCormick, Mac
- McCormick Gospel Singers
- McCoury, Finley & Edith
- McCowan, Homer
- McCoy, Junior
- McCoy, Norman E.
- McCoy, Otis
- McCoy, Red
- McCoy, Tully
- McCrary Trio
- McCravy, Frank & James
- McCravy Brothers SEE: McCravy, Frank & James
- McCraw Family
- McCreary County Travelers
- McCullah, Earl
- McCullough, Marvin
- McDaniels, Elestine
- McDonald Brothers
- McDonald Brothers Stamps Quartet SEE: McDonald Brothers
- McDowell, John
- McDuff Brothers Quartet
- McDuffie, Pete
- McFalls, Fred
- McFarland, Don
- McFarland, Elijah H.
- McFarland, Judy SEE: McFarland, Elijah H.
- McFarland, Mac
- McGee, Kirk
- McGee, Ronald
- McGee, Sam SEE: Various Artists (Diplomat); Various Artists (Starday); Various Artists (Wyncote)
- McGinnis, Agnes
- McGlothens
- McGlothlin Family
- McGruder, Evangelist & Mrs. Carroll McGruder
- McGuire, Mac
- McGuire, Olen
- McHan, Don
- McKamey Family
- McKelvey Quartet
- McKendrie, Betty
- McKenzie, Jerry
- McKiney Family
- McKinney, Evangelist Berlon J.
- McKinney Sisters
- McKinnon, Alex
- McManus, Otis
- McManus, Willis
- McNew, Fred
- McQueen, Cager
- McQueen Sisters
- McRae, Arvis & Kathlene
- McReynolds, Jim & Jesse
- Meadors, Linda
- Medleyaires
- Mel & Stan
- Mello-Tone Quartet SEE: Mello-Tones
- Mellotones
- Mello-Tones
- Mellowtones Quartet
- Melody Aires Quartet [Georgia]
- Melody Aires Quartet [Ohio]
- Melody Boys Quartet
- Melody Four Quartet [Illinois]
- Melody Four Quartet [North Carolina]
- Melody Four Quartet [West Virginia]
- Melody Girls
- Melody Makers Quartet
- Melody Masters Quartet [California]
- Melody Masters Quartet [Illinois]
- Melody Masters Quartet [Kentucky]
- Melody Masters Quartet [Nebraska]
- Melody Masters Quartet [North Carolina]
| - Melody Masters Quartet [Ohio]
- Melody Masters Quartet [loc?]
- Melody Men
- Melody Men Quartet
- Melody Quartet
- Melody Sisters
- Melody Trio [North Carolina]
- Melody Trio [Ohio]
- Melody-aire Trio
- Melodyaires Quartet [California]
- Melody-aires Quartet
- Melodyette Trio
- Melodymen Quartet
- Melodymen's Quartet
- Melotones
- Mel-o-tones Quartet
- Memphians
- Men From Mars
- Men Of Madison
- Mercer, B.A.
- Merrell, Bob
- Messengers [Ohio]
- Messengers [Oklahoma]
- Messengers [West Virginia]
- Messengers Quartet [Georgia: East Point]
- Messengers Quartet [North Carolina]
- Messengers Quartet [Ohio]
- Messengers Quartet [Tennessee]
- Messengers Quartet [Virginia]
- Messengers Trio
- Messer, Ervin SEE: Various Artists (Gold Eagle)
- Messer, Landon SEE: Parsley, Albert
- Messer, Richard
- Messer Sisters
- Messner, Bud
- Metcaff, Rachel SEE: Rocky Ridge Quartet
- Meyers, Willis
- Miami Valley Quartet
- Mickelson, Paul SEE: Hamblen, Stuart
- Middle Ford Gospel Airs
- Mikey & Bobby
- Milbourn, Wilbur & Mildred
- Miles, Charles
- Miles, Phil
- Miller, Bill
- Miller, Charles & Darlene
- Miller, Dale
- Miller, Darnell SEE: Various Artists (Design); Various Artists (Starday)
- Miller, Ervin L.
- Miller, Flora
- Miller, Frankie
- Miller, Richard
- Miller, T.O.
- Miller Accordionaires
- Miller Brothers [Kentucky]
- Miller Brothers [loc?]
- Miller Family
- Millet, Lou
- Million $ Quartet
- Millirons Family Gospel Singers
- Millner, Welon
- Mills, Oliver SEE: Sanders Family
- Mills, Robert
- Mills, W.C. & Betty
- Mills, Wanda
- Ministers Quartet
- Minkler Family
- Minor, Dave
- Miracle Men
- Mission Covenent Church
- Mission Gospel Singers
- Mission-aires
- Missionaires
- Missionaires Quartet
- Missionaires Quartette
- Missionettes
- Mitchell, Betty
- Mitchell, Brother
- Mizer, Sherman SEE: DeVore, Joyce
- Mobley, Jess
- Mobley Sisters
- Monitors
- Monroe, Bill
- Monroe, Charlie
- Monroe, Smiley
- Monroe Gospel Quartet
- Montgomery, Harold
- Montgomery, Melba
- Montgomery, Paul
- Montgomery Brothers
- Moody, Clyde
- Moody, Dwight & Cathy
- Moody, John & Gloria
- Moody, W.A.
- Moon, Tex
- Mooney, Clyde SEE: Various Artists (New American)
- Moonliters
- Moore, Arthur
- Moore, Charlie
- Moore, Dennis
- Moore, Doc
- Moore, Frankie
- Moore, Lattie
- Moore, Lee
- Moore, Lydia
- Moore, Mel
- Moore, Rev. Ronald
- Moore, Royce SEE: Various Artists (Jewel (Ohio: Cincinnati))
- Moore, Spencer
- Moore, Ve Ron
- Moore, Willa Jean
- Moore, William
- Moore & Napier SEE: Moore, Charlie
- Moore Brothers
- Moore Family
- Moores
- Moreland Sisters
- Morgan, Billy Don
- Morgan, George
- Morgan, George W., III
- Morgan, June
- Morrell, Joe SEE: Cassidy, Jack
- Morris, Bob
- Morris, Deacon
- Morris, Dow
- Morris, Jackie
- Morris, Melvin
- Morris, Mildred
- Morris, Stan & Marilyn
- Morris, Sterling
- Morris Brothers
- Morris Family [Georgia]
- Morris Family [Oklahoma]
- Morrison, Eunice
- Morrison, Harold SEE: Various Artists (Rocket)
- Morrow, Leon
- Morss, Wayne
- Morton Sisters
- Moscheo, Joe, II SEE: Prophets Quartet
- Moseley, Semie
- Moses, Johnny
- Moses Family
- Mounce, Eddie SEE: Various Artists (Broadcast Record Club)
- Mt. Olive Quartet
- Mountain Four
- Mountain Mission Octette
- Mountain State Sacred Singers
- Mountain State Gospel Trio
- Mountain View Quartet
- Mountaineers
- Mounts Family
- Mulkey Family
- Mullett, Ed & Dora SEE: Copley, Mrs. Milender
- Mullican, Moon
- Mullins, Don
- Mullins, Juanita
- Mullins, Moon SEE: Various Artists (Skinners Music Shop)
- Mullins, Paul
- Mullins, Ruby
- Mullins, Ted
- Mullins Brothers & Ruth
- Mullins Family
- Mullis, Calvin
- Muncy Brothers
- Murdock Brothers
- Murdock Family
- Murie, Donna
- Murphy, Clyde
- Murphy, Fred
- Murphy, Jimmy
- Murphy, L. SEE: Murphy Family [Georgia]
- Murphy Family [Georgia]
- Murphy Family [Ohio]
- Murphy Trio
- Murphys
- Murray Family
- Muse, Gary
- Music City Trio
- Musical Cudes
- Musical Four
- Musical Harts
- Musical Lebsacks
- Musical Lewis Family SEE: Lewis Family
- Musical Messengers [Indiana]
- Musical Messengers [Pennsylvania]
- Musical Milbourns
- Musical Millers Quartet
- Musselman Brothers
- Myers, Singing SEE: Singing Myers
- Myers, Bob
- Mynatt Road Boys & Jean
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