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- The machine's organization: how Indiana makes a snowmobile trail exist Snowmobile Trails
- The machinery, honestly: FTZ 125, the customs standing, and somebody else's port Exports
- Major Donations Section
- Major donations: two deeds in kind, and the honest thinness after them Major Donations
- The Maker Test First: No Farm Tractor Was Built in New Carlisle Tractors
- The makers and the restaurants: sightings gathered, courses at their strengths Food & Drink
- Mall and multiplex succession, dated by the corridor's actual generations Arts
- Malls & Shopping Section
- The Managers Complete: New Prairie Successions and the League's Own Team Histories
- Maple Grove: a ground in one sentence Cemeteries
- Markets whole, and the supermarket test Food & Drink
- The Marsh System, and What Drainage Did to Its Animals Wildlife
- The marshal's department — from the ordinance book to Marshal Croymans Fire & Public Safety
- The marshal's office and the modern record Crime
- McDonald Notable People
- McDonald Health & Care
- The Measurement Invention: Press Ganey, South Bend 1985 — and the Town Test Medical Advancements
- Mechanisation's frame, and suburban conversion measured Farms & Agriculture
- The Mechanization Curve: Fewer Farms, Bigger Tractors, 1920 to 2022 Tractors
- Media today: a town without a paper, covered from the county seat New Carlisle Today
- Media today: the papers and stations as they now stand New Carlisle Today
- Medical Advancements Section
- The Medical School as Research Campus: IUSM—South Bend in Its Own Record Medical Advancements
- Medicine, at Inventions Size — One Machine, No Powder, No Syndrome Inventors & Inventions
- Memorial Day as an institution: from the Grand Army's order to Post 297 Veterans
- Memorials by war: the marker stock tested class by class Veterans
- Mental Health Institutions Section
- The method, as practiced — and the four doors Sources
- The Methodist Collegiate Institute: the town's grandest nineteenth-century building, gone in 2024 Architecture
- The Middle-School Line and the Career/Technical Line Schools
- Military Section
- Military Records: What Remains Open Wars & Military Service
- The militia years: the county under the state militia law Military
- The mission ground: Carey Mission, the Sauk Trail corridor, and a township named Olive Churches & Religion
- The modern booster claims: the billions, and "approximately 1,860 residents" Famous Stories & the Record
- The modern course: kiosks, mail, and the counters as they stand License Branch
- The modern federal sheets: cluster map and quadrangle Historic Maps
- The Modern Layer and the Movers: The Present Employers as a Technology Roster, November 2026 Technology
- The modern layer: steel at the edge, and what is arriving Architecture
- The modern nations, as of November 2026 Native Nations
- The modern office and the shape of 46552 Post Office
- The modern position, as of November 2026: a live system, thinly published Snowmobile Trails
- The modern practitioners — two clinics on the US 20 corridor Health & Care
- The modern rebuild: 408 South Bray Street, with its audited measure Libraries
- The modern roll — the association directory and the industrial edge, 2026 Businesses
- The modern water course — two plants, a county partnership, and a four-mile line Utilities
- Monastery of the Nativity of the Mother of God — Serbian Orthodox, consecrated 1994 Churches & Religion
- The money: examined to the dollar Libraries
- Monuments and markers, as built objects Architecture
- More Businesses Section
- "The most dangerous railroad crossing on the Lincoln Highway, and with the largest number of victims to its credit of any crossing on the coast-to-coast route." Famous Stories & the Record
- A museum in the building it documents: true of the second home, not of the third Arts
- The museum that left: none did — the collection moved across town, not out of it Arts
- The music tests: a band, a chorus, a dance floor and a record — each looked for, none found standing Arts
- Music today: the school ensembles, the festival stage, the park series — and the founding dates nobody kept Arts