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- The labor set-piece: the first auto sit-down was the county's — and its length is disputed in print Wars & Military Service
- The labor system from inside: no works local, no strike, no settlement — the register's four locals are commuters' addresses, tested and printed Industrial Revolution
- The labor the works drew: named owners from New York and the farm townships — and no hands count anywhere in the record Industrial Revolution
- The Laidlaws: the Scot who walked to Indiana — two books, two journeys Notable People
- The Land Section
- The land market: offices, opening, and Penn's entries The Land
- The land-trust test: ACRES told whole as a founding — and the trust that actually holds this county named Hiking Trails
- The landmark lounge across from the institution: the Linebacker, and the corridor's licensing war Bars & Nightclubs
- The largest gift, established at the strength the record allows Major Donations
- The last chiefs in complete succession to the end of the house: Studebaker, 1954–1966 Founders & CEOs
- The Last Decade, 2015–2026 (L15·9) Osceola Today
- Later orders; the Prince Hall and klavern tests printed as tests — one positive, one split Lodges & Fraternal Orders
- The later wars: an exact zero, with its searches Wars & Military Service
- The Latino community, whole and staged: from an uncounted presence to a counted one Communities
- The law of keeping: the 1973 ordinance and the commission it created Historic Preservation
- The law over their heads, whole: 1793, 1831, 1850, and Article XIII — with the county vote a named gap Underground Railroad
- The law over their heads, whole: the Black Laws, Article XIII, and the vote — with the county count named as a gap Underground Railroad
- The ledger of losses, complete and separate from the rescues Historic Preservation
- The Legion baseball test: a chairman, not a team Sports
- License Branch Section
- License Branch: Not Found and Still Open License Branch
- Licensed production abroad, distinguished from shipped goods Exports
- The licensing beats: the driver's license comes to Penn Township License Branch
- The Lilly Endowment line whole, at county size Major Donations
- The Lincoln Highway and the numbered roads The Story of Osceola
- Lincolnway through town Transportation
- The Lincolnway trade and the present seated commerce, as of November 2026 Businesses
- The lines out: the statehouse line and the congressional district-number trap Public Servants
- Literary institutions: no journal, no press seated here — a searched negative Arts
- The loans, whole, drive by drive: St. Joseph County in Greenough's tables Wars & Military Service
- The loans, whole, drive by drive: St. Joseph County in the official tables Wars & Military Service
- The local broadcast comedy whole: the valley's own invention was a high-school sketch show in South Bend Comedy
- The Local Shelf Authors & Books
- The locally born supermarket chain: Martin's Super Markets, born on Portage Avenue in 1947 Food & Drink
- The locally produced phenomenon: Beyond Our Control — the show the city's own teenagers produced, 1968–1986 Film & TV Producers
- Location productions: tested negative for Osceola, the checklist pair dug at boundary Film
- Lodges & Fraternal Orders Section
- The long studios in succession: McDonald Studio, South Bend, 1861 to the present — the county's one unbroken line Photographers
- The long tail at full count: the second-rank register, name by name Notable People
- The long tail: names, and where the rest stand Notable People
- Long's additions — Long's 1st at 28 parcels, the family near 30 Neighborhoods
- The long-lived houses at full size: no house's founding stands in the Record — NAMED GAP, settler named Dealerships
- The long-wait cases: no Osceola or Penn case waited for DNA, apprehension, or execution Crime & Public Safety
- The longest-lived local house, with its full run Wineries & Distilleries
- The lore business, as the closing article: who manufactures this county's ghosts, and what they have made of this town Famous Stories & the Record
- Lore tested separately from fact: no Dillinger story seats in Osceola, Indiana Crime & Public Safety
- The loss ledger, line by line: the interurban lost 1 June 1934 (dated); the steam road's stop gone by 12 July 1959 (bracketed) — the exact last year stands as the named gap Transportation
- The losses that taught the city, first Historic Preservation
- The lost birds: prairie chicken and passenger pigeon Wildlife
- The lost-grave and lost-archive class: one grave disturbed in the record, no archive burned in it Historical Mysteries
- Lottery & Crypto Section
- Loyalty's edge, the wartime clock, the Armistice, and influenza at the edge Wars & Military Service
- Loyalty's edge, the wartime clock, the Armistice, the homecoming — and influenza, the other war Wars & Military Service