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- Madison Center — the Catchment Dug, the Founding Body Still Unreached Mental Health Institutions
- Madison Center's End, as Separate Events — Designation, Takeover, and the Undated Remainder Mental Health Institutions
- Madison to Oaklawn — the County's Mental-Health Designation Moved on 24 September 2010 Hospitals
- The Main rebuild's money, and Lakeville's turn in Our Next Chapter Libraries
- Main Roads & Corridors Section
- Major Donations Section
- Major Donations: One Great Gift, and the Palmer Answer Major Donations
- Major Events Section
- Maker houses tested: one confectionery line, no bakery, no candy house Food & Drink
- The Maker Test First: No Farm Tractor Was Ever Built in Lakeville Tractors
- Malls & Shopping Section
- The mansion test: no great house is named for this ground Architecture
- The Manuel Thread — a Huggart Settlement Trustee Churches & Religion
- The mapped check: Royce Area 146, and only 146 The Land
- Maps Historic Maps
- The margins, stated honestly The Land
- The markers counted: two in the town, twenty-three in the county — and a third number, printed whole Historic Preservation
- The Marlette read, executed whole: the "Proposed Lines" chapter and the 1904 proposal test Railroads
- The marsh that was ditched away Before Lakeville
- The marshal and the town police department Government
- The marshal line before 2012: the shortfall, printed expressly Crime
- The marshal's line, carried back to 2012 Government
- The Marshal's Office — Police at Town Size Fire & Public Safety
- The Meadery-Winery Form, Tested Separately — Nothing Ferments Honey in the Record Wineries & Distilleries
- The mechanism that never ran here: railbanking, and the state's money Bike Trails
- Medical Advancements Section
- The meltwater reversal, and the Torrent Before Lakeville
- The Memoirist Test — Mangus Wrote No Memoir; No National Name's Newspaper Years Are Lakeville's Authors & Books
- Memorial Day: an Institution Whose Present Form the Record Does Not State Veterans
- The Memorials Inventory: What Stands, and What Was Tested and Not Found Veterans
- Mental Health Institutions Section
- Mental Health Institutions: None Seated; the Routes Dated Mental Health Institutions
- The metropolitan area, named exactly, and the town's share of it Population
- The Mid-Century Rhythm Runs Through Hollywood — Grove's Orbit Never Came Home to Play Music
- The Mid-Century Trade State at a Named Date — Unreached, and Named Fashion
- Mid-size manufacturers, named: Fisher's broom factory and the mill bench whole More Businesses
- The middle-school line as it stands, and the career/technical line Schools
- Military Section
- The Military at Town Size: One Lieutenant, and Machinery in South Bend Military
- Military Records: What Remains Open Wars & Military Service
- The Miller Test — the Standard Source, Unreached Newspapers & Media
- The Mills' Full Course — Steam, Water, and the Six Mill Firms of 1889 Businesses
- Mills, Dams, Industry and Parks Rivers
- The Mini Formats — Art at Hand Size in a Town Without Walls to Hang It Arts
- The missing: the roll, with its sources named and their limits printed Cold Cases
- The modern calendar the town built, and its verification Events Calendar
- The modern course: reform at a distance, the kiosk test, and November 2026 License Branch
- The Modern Exporter — Hoosier Racing Tire's Foreign Distribution Exports
- The modern frame: the town today The Story of Lakeville
- The Modern Ledger — What the Present-Day Record Reached Actually Names Businesses
- The modern nations in their own published voice: the Pokagon Band and the Miami Tribe on this valley Native Nations
- The modern nations, as of November 2026 Native Nations
- The modern trade, named: Stephanie Grau Photography, Lake Trail Photographers
- The Moon brothers and Michael Hupp Notable People
- Moose, Eagles, Prince Hall, and the Klavern Test — the Fraternal Leg's Back Page Lodges & Fraternal Orders
- More Businesses Section
- More Businesses: Firms Not Found in the Record More Businesses
- More People Section
- Mount Calvary Cemetery: the Parish Ground on the Highway Cemeteries
- Muck, Mint, and Truck Crops — County-Proven, Township-Unproven Farms & Crops
- Murders and officer killings, era by era: two cases and a searched silence Crime
- The museum that left, the university boundary, and the county-line roster Museums
- Museums Section
- Museums & Famous Locations — Legs 27 and 28 Museums
- Music Section
- Music & Arts — Legs 40 and 41 Music
- The musician: Dick Grove Artists
- Mysteries of the record: the unknowns this section actually owns Historical Mysteries