D
- D. W. Reece Notable People
- Dairy: the Schlosser Brothers creamery, bought 1895, operating in 1916 Farms & Crops
- Daniel Antrim Notable People
- The dated observance: Monday, 31 May 1965 Memorials
- David Rupel Notable People
- Dealerships Section
- Decorations: none reached at claimable strength, for anyone War Heroes
- Del M. Woodward Notable People
- The departed predators: wolves, panthers and bears Wildlife
- The Desegregation Test: None for John Glenn Schools
- Designation lost, contract ended, successor named: September 2010 Mental Health Institutions
- The designations, counted: town 2, township 0 Historic Preservation
- Development and the built city now North Liberty Today
- The diamond: the crossing itself Railroads
- The Digitized Shelves: What a Checker Can Open Tonight Sources
- Dillon Airport — 9II3: the strip the directories forgot to close Airports
- The Directors: Seven Holders, Humphreys to Murphy Libraries
- The directory houses and the motel era: an unnamed record Hotels & Motels
- Distillers: a searched negative, with its span printed in parts Wineries & Distilleries
- The District Truth: Named for the County, Taxed by Eight Townships Libraries
- The documented case: the Powells were seized on the road to Cassopolis, and freed at South Bend Underground Railroad
- Dot-Com Era Section
- Doug Buysse — a professional coaching career Sports Players
- Dr. Erastus S. Darling, A.M., LL.B., M.D. Notable People
- Drainage: the wet edge the township farms against Farms & Crops
- The draining of the millpond — the hinge event, undated Major Events
- The drug store line: Hoffman to Moak to Merrick's — and no successor Businesses
- The dry years and the drug era: two tested negatives Crime