D
- The daily tests: a Christmas bazaar paper, the Daily Journal, and the daily that never took Newspapers & Media
- The dam of 1837 and the races The River & Parks
- The dam whose first electricity lit another city Strange but True
- Dan Dzierla: a Silver Star as the newspaper reported it War Heroes
- The dance orchestras of 1924: Leonard, Murray, and the Harmony Four Music
- Dance Whole Arts
- Daniel L. Gard: the pastor who became an admiral Notable People
- The database era: Mishawaka in the National UFO Reporting Center UFO Sightings
- The date inside the stair Strange but True
- The dated future Mishawaka Today
- The Dated Mileage Ledger, Figure by Figure Trails
- De Kever, Mishawaka: A History — the commissioned history Sources
- The Dealer Founders Founders & CEOs
- The dealer pattern, tested: Gurley Leep took the lot online and stayed Dot-Com Era
- Dealerships Section
- The DeAmicis club: the Italian south side's hall Private Clubs
- Dean Bolerjack: the chief who became sheriff Public Servants
- Decline and remaking: the slide, the closings, the replacement anchors, the riverfront The Story of Mishawaka
- The deep human frame Before the City
- The Deer and the Turkey: Gone, and Brought Back Past This Ground Wildlife
- The Defense City: An Overview, Then Firm by Firm Military
- The defense decades: missile cases and the last fuel cells Exports
- The defense decades: missiles, foam, and fuel cells Ball Band
- The defense-industry boundary: one customer relation, stated once Military
- The defining players, the supporting cast, and the rosters the record prints Team Histories
- The demolition ledger Architecture
- Density and rank Population
- The Departed Predators, at Township Size Wildlife
- The depots Railroads
- The descent: from Willys and Kaiser to the government-products business AM General
- The Development Corporation Test, and the Neighborhood Corporations in Series Foundations & Nonprofits
- The DiLoreto Club: the north side's Italian hall Private Clubs
- The Diocese Course: Two Dioceses Over One City Churches & Religion
- Diphtheria and scarlet fever: the state's table, the town's silence Epidemics & Public Health
- The Directories of Papers: Ayer, Rowell — and Miller, Named and Not Read Sources
- The directory census: one hotel, then two Hotels & Motels
- The disaster set at building granularity: a register Wars, Unrest & Disasters
- The distillers: one documented still, then a searched silence Wineries & Distilleries
- The district that got its guidelines: West Mishawaka Avenue, 2002–2005 Historic Preservation
- The district: Penn Township in 1978, Harris Township in 2001 Libraries
- Doc Pierce's: the downtown steakhouse with a borrowed name Food & Restaurants
- The documentary of the closing, and the production company Film
- The documented competition record — Portola and Indianapolis, 1911 Racing
- The documented openings: 2008, 2014, 2016 Hotels & Motels
- The Dodge ground: cleanup in course, demolition planned Mishawaka Today
- The Dodge House: the house a church voted not to demolish Architecture
- The Dodge line after the founder: the rope drive, the Taper-Lock, and the Torque-Arm Inventors & Inventions
- Dodge Manufacturing — the power-transmission house Businesses & Banks
- The Dodge Money: A Fortune Documented as a Company, Not an Estate Great Fortunes
- Dodge transmission: "installed throughout the world," as the company sold it Exports
- Dodge, an unnamed election, and Mason Petro Government
- Donald Heirman: standardization is not invention, printed exactly Inventors & Inventions
- Donald N. Heirman: Mr. EMC Standards Notable People
- Dot-Com Era Section
- The downtown building grown: the 1998 expansion and the Heritage Center Libraries
- Downtown first: the store street and the brewery block Malls & Shopping
- The Dragoon Trace: The Line Hunt Trails
- The Dragoon Trace: the trail, and a name that does not hold up Main Roads & Corridors
- Dress on show: the Julianna Club bridal fashion show, 1967 Fashion
- The drift: two hundred feet of carried ground Before the City
- The drive-in test: the screen was never in Mishawaka Kids & Family Entertainment
- The drive-in: the screen was never in Mishawaka Theaters
- The drivers tested — the Mishawaka element of 1911 is the machine Racing
- A driving park on Mishawaka ground — tested, and not found Racing
- The drone winter, 2024–25 UFO Sightings
- The Drug Era in the Federal Record — the Cases as the Federal Record Gives Them Crime History
- The dry years at the plant: The Arrow, soda, distilled water, and ice Wineries & Distilleries
- The Dry Years Whole — the Bootlegging Economy, the Resale Test, and the Township Speakeasy Test Crime History
- The dry years: the moral fight Mishawaka fought as commerce City Controversies