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- The Laboratory Discovery: Germ-Free Life at Notre Dame — and No Laboratory Seated Here Medical Advancements
- The labour system from inside: Local 9231, and a reckoning without a strike Industrial Revolution
- The labour the works drew: Polanders first, then the region's steel hands Industrial Revolution
- The ladder, level by level: what was closed, converted and rebuilt Schools
- The Land Section
- The land-trust holder whole: The Nature Conservancy, from a 1951 incorporation to a 1978 lake in Olive Township Hiking Trails
- Landmark-lounge and student-corridor test: no college corridor exists — a printed negative Bars & Nightclubs
- The last decade: 2016–2026, the years that made the present town New Carlisle Today
- The later wars at the same standard, printed whole Military
- The Latino community: from the labour stream to the county's institution, dated at each stage Communities
- Law in the township: justices, riders, and one disorder Crime
- The law over their heads, whole: 1793, 1850, the Black Laws, Article XIII — and the county's missing register Underground Railroad
- Lazarus Bourissa and the treaty-grant families Notable People
- The Leg Itself: The Qualifying Record, Gathered Controversies
- The Legion: Post 297, named for James W. Swanson Wars & Military Service
- Libraries Section
- Libraries: Open Questions Libraries
- The library today Libraries
- License Branch Section
- License Branch: Not Found and Still Open License Branch
- The licensing beats: the driver's license comes to Olive Township License Branch
- The Lilly Endowment Line, Whole Major Donations
- The line run in 1817: five and four-fifth miles south of the town The Land
- Literary institutions: the town's presses are its newspapers — and no journal or literary press was ever seated here Arts
- The live stage after the palaces: a school auditorium and a festival weekend Arts
- The living map, verified as of November 2026 Historic Maps
- The living plant at its true address — is anything assembled here today? Automobiles
- The loans whole, drive by drive Wars & Military Service
- The Local Broadcast Comedy Test: A Music Station, and the Market's Lines Are South Bend's Comedy
- The local shelf: what stands, and the whole read still owed Authors & Books
- Lodges & Fraternal Orders Section
- The long narrowing: a removals ledger for the first age, one line at a time Industrial Revolution
- The long tail: the rest of the 1880 sketches, name by name Notable People
- The loss ledger: what the corridors have given up, line by line Transportation
- The Lost Birds: Prairie Chicken and Passenger Pigeon Wildlife
- Lottery & Crypto Section
- Loyalty's edge and the wartime clock Wars & Military Service