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- Mabel K. Holland Elementary School Schools & Colleges
- A MacArthur Fellowship: John Henry Holland National Honors
- The machine arrives, and the state organizes it Snowmobile Trails
- The machinery · enrollment, draft boards, recruiting Military
- The machinery: a customs station and Foreign-Trade Zone 182 Exports
- Magnavox Notable People
- Magnavox — the consumer decades Technology
- Magnavox · the defense-electronics house Military
- Magnavox (The Magnavox Company — Fort Wayne) Businesses
- The Magnavox Odyssey was invented in Fort Wayne. Famous Stories & the Record
- Magnavox's defense company — and its Raytheon heir Technology
- Magnet wire — the trade Fort Wayne founded Technology
- The Magnet Wire Money: George Jacobs and the Rea Family Great Fortunes
- Main Roads & Corridors Section
- Majestic Theatre Businesses
- The Majestic Theatre: the Berry Street playhouse Theaters
- Major Donations Section
- Major Events Section
- Malls & Shopping Section
- The man in the river · Harold Shaw Cold Cases
- The manager held overnight · the robbery of November 20, 1961 Bank Robberies
- Manchester University Fort Wayne Schools & Colleges
- Maple Creek Middle School Schools & Colleges
- Maplewood Elementary School Schools & Colleges
- Marcel Audiffren Notable People
- March 4, 1976 · the robbery whose record is a shooting Bank Robberies
- Marcia Linsky · the lawyer the courthouse lost Notable Murder Cases
- Margaret Ringenberg Notable People
- Marilyn Maxwell Notable People
- Marilyn Maxwell: the Hope partnership Comedy
- Marion and Vern Ward, and Gail Cole — the pattern shop in the knitting mill Founders & CEOs
- Marion Donovan Notable People
- Marion Donovan: the diaper inventor, and a birthplace two institutions dispute Famous People
- Mark Hornsby: Sweetwater's senior producer Film & TV Producers
- Mark Souder Notable People
- Markers and trails: heritage on the street Historic Preservation
- The Marketplace of Canterbury: the strip center that became an entertainment district Malls & Shopping
- Marmaduke M. M. Slattery: the alternating-current man Inventors & Inventions
- The marsh rebuilt: Eagle Marsh and the carp line Wildlife
- Martin Luther King Montessori School Schools & Colleges
- Mason Plumlee Notable People
- The materials themselves: DFT wire, strands, cables — components inside devices worldwide Medical Advancements
- Matt Vogel: two gold medals in two days at Montreal Sports Players
- The Maumee Theatre: the east side's picture house Theaters
- The Maumee: the river that is born here The Three Rivers
- Maurice L. Jones: from the studio chair to the Kodak counter Photographers
- Max Altekruse: fifty years an artist for hire Artists
- The mayor who resigned and came back in twelve days City Controversies
- The mayoralty: terms and shape Government
- Medical Advancements Section
- The medical colleges — Fort Wayne College of Medicine Schools & Colleges
- A medical school's research campus: IU School of Medicine—Fort Wayne Medical Advancements
- Medicine: the modest record, kept modest — a powder, a syndrome, and a negative Inventors & Inventions
- MedPro Group — first the Physicians' Guarantee Company, then The Medical Protective Company Businesses
- The meeting of the waters The Three Rivers
- Memorial Park Middle School Schools & Colleges
- The Menagerie Before the Zoo: The Sanctuary Years, 1952–1965 Zoo
- Mental Health Institutions Section
- The merger question Government
- The merger that never happened City Controversies
- Merle J. Abbett Elementary School Schools & Colleges
- Meshingomesia Notable People
- The method, in plain words Sources
- The Methodist Daughter Churches Churches & Religion
- The Methodists: mission of 1828, Berry Street Chapel, and First Wayne Street Churches & Religion
- The Mexican table arrives: El Azteca, Bandido's, Salsa Grille Food & Restaurants
- The Miami & Native Nations Section
- Miami Middle School Schools & Colleges
- Michael Graves's First Houses — Hanselmann (1967–1971) and Snyderman (1972) Architecture
- Michael Martone — the city's experimentalist Authors & Books
- Michele Crider, Local Lezbian: the server whose video answered back Influencers & Digital Creators
- The micro-budget decades: horror in a dying cinema, and the $11 opening Film
- The mid-century order Banks
- The mid-century record · the Killer in the Rain, and the quiet decades after Notable Murder Cases
- The mileage, as stated · a dated ledger of the network's size Bike Trails
- Miles F. Porter and the age of bold surgery Medical Advancements
- Miles F. Porter, M.D. Notable People
- Military Section
- The military in Fort Wayne today Military
- The militia years · the county's standing companies Military
- Mills on the rivers The Three Rivers
- The Mirro Center: a community system's research house Medical Advancements
- Miss Page: the Embassy's Grande Page organ Music
- The missing · two open files Cold Cases
- Mizpah Shrine and the circus that outlived the lodge era Lodges & Fraternal Orders
- The modern composition: the censuses of 2000, 2010 and 2020 Population
- The modern layer — health software, geothermal, and water Technology
- The modern layer: care in the community Mental Health Institutions
- The modern layer: farms inside the city, and the shrinking map Farms & Crops
- The modern ledger: what the federal count says Exports
- The modern organizations in brief · leagues, clubs and professional women Women's History
- The modern position: fewer sleds, shorter odds on snow Snowmobile Trails
- The modern record: the reporting databases UFO Sightings
- The modern scene: Fort Wayne's Finest, JT Turner, and Fort Wayne Improv Comedy
- The modern tail · the federal record Bank Robberies
- Moellering Construction Company Businesses
- More Animals of Record: A Gibbon, Two Lions, Hellbenders, and Two Tigers in a Pandemic Zoo
- More family tables: China Palace and RMY's Food & Restaurants
- The Mossmans: Hardware Money Behind the Magnet Wire Industry Great Fortunes
- Most Precious Blood Catholic Church (1897) Churches & Religion
- Most Precious Blood School Schools & Colleges
- The mother lodge's children, and the temples they built Lodges & Fraternal Orders
- The motor age: tourist cabins, the Lincoln Highway, and the bypass Hotels
- Motorcycles: the two-wheeled record Racing
- The moved houses Historic Preservation
- The movers — the people who built the base Technology
- The muck crops: onions, celery, peppermint — and beets on the clay Farms & Crops
- The multiplex era, in brief Theaters
- A museum that moves: Nickel Plate 765 and the Fort Wayne Railroad Historical Society Museums
- Museums Section
- Music Section
- The mussel beds: the river's quiet census Wildlife
- Mustard Seed Furniture Bank Charities
- The Myaamia shelf: Costa, the Myaamia Center, and the Miami historians Sources