<Page> EXHIBIT 21 TRIBUNE COMPANY - LIST OF SUBSIDIARIES <Table> <Caption> JURISDICTION OF OTHER NAMES UNDER WHICH INCORPORATION SUBSIDIARY DOES BUSINESS --------------- ------------------------ PUBLISHING Tribune Publishing Company Delaware The Baltimore Sun Company Maryland The Sun Homestead Publishing Co. Maryland Empty Stocking Fund, Inc . Maryland Patuxent Publishing Company Maryland The Aegis; Arbutus Times; Baltimore Messenger; Cantonsville Times; Columbia Flier; Fifty-Plus; Howard County Times;Jubilee; Male and Family; Maryland Job Market; Ownings Mills Times; North County News; Northeast Reporter; Northeast Booster; Towson Times Baltimore Newspaper Networks, Inc. Maryland Signs of Distinction, Inc. Maryland Chicago Tribune Company Illinois Chicago Tribune; Chicago Magazine; RedEye Chicagoland Publishing Company Delaware AutoFinder; JobFinder; Mature Adult; New Homes Guide; Relcon Chicago Tribune Newspapers, Inc. Illinois Chicago Tribune; Exito! Chicago Tribune Press Service, Inc. Illinois Tribune Newspaper Network Newspaper Readers Agency, Inc. Illinois Tribune Direct Marketing, Inc. Delaware Tribune Direct Marketing The Daily Press, Inc. Delaware Daily Press Virginia Gazette Companies, LLC Delaware Virginia Gazette E Z Buy & E Z Sell Recycler Corporation Delaware E Z Buy & E Z Sell Recycler Corporation of Southern California Delaware AutoBuys; AutoPix; AutoSeller; AutoTruckBuys; Big Truck & Equipment; BoatBuys; Car Buys; Caravan Express; CycleBuys; Desert Auto Buys; EZ-Ads; Greater South Bay Real Estate Weekly; Homes & Open Houses; Inland Empire Jobs; Orange County Jobs; Recycler; Recycler.com; The Renter; RV Buys; San Fernando Valley Jobs; TruckBuys The Renter, Inc. Delaware Tillema Publishing, Inc. California Forum Publishing Group, Inc. Delaware Jewish Journal The Hartford Courant Company Connecticut Courant Specialty Products, Inc. Connecticut Heart & Crown Advertising, Inc. Connecticut New Mass. Media, Inc. Massachusetts Fairfield Weekly; Hartford Advocate; New Haven Advocate; Valley Advocate; Westchester Weekly TMLH 2, Inc. California </Table> <Page> <Table> <Caption> JURISDICTION OF OTHER NAMES UNDER WHICH INCORPORATION SUBSIDIARY DOES BUSINESS --------------- ------------------------ Orlando Sentinel Communications Company Delaware Black Family Today; Central Florida Family; Central Florida Family Guide; Family Journal Publications; O'Arts; Orlando City Book; Relcon of Florida; US/Express Neocomm, Inc. Delaware Neocomm of Delaware, Inc. North Avenue Properties, Inc. Florida Sentinel Communications News Delaware Ventures, Inc. The Morning Call, Inc. Pennsylvania Target Select Cable Direct Mail Associates, Inc. Pennsylvania Direct Marketing Distribution, Inc. Pennsylvania Southern Connecticut Newspapers, Inc. Connecticut The Adovcate; Greenwich Time TMLS I, Inc. California Sun-Sentinel Company Delaware Sun-Sentinel; Florida New Homes and Condominiums Guide; Gold Coast Labeling; Signs by Sun-Sentinel Gold Coast Publications, Inc. Delaware City Link; Gold Coast Shopper; South Florida Parenting; Vital Signs TMD, Inc. Delaware Newsday, Inc. New York Distribution Systems of America, Inc. New York DSA Community Publishing, LLC Delaware Huntington Pennysaver; Results Media; Shopper's Guide; This Week; Yankee Trader DSA Direct, LLC New York Hoy, LLC New York Hoy Tribune Classifieds, Inc. Delaware Tribune Los Angeles, Inc. Delaware Los Angeles Times Communications LLC Delaware The Burbank Leader; Daily Pilot; The Foothill Leader; Glendale-News Press; Huntington Beach/Fountain Valley Independent; latimes.com; Newport Beach/ Costa Mesa Daily Pilot; Our Times; Times Community News Los Angeles Times Newspapers, Inc. Delaware Los Angeles Times Tribune Media Services, Inc. Delaware Fluent Media; TV Week; Zap2it TMS Interactive Software, Inc. Delaware Interactive Software LLC Canada TMS Movie Information Products, Inc. Colorado TMS TV Publishing, Inc. Wisconsin TV Data Technologies, L.P. Georgia Tribune Media Net, Inc. Delaware Tribune National Marketing Company Delaware </Table> <Page> <Table> <Caption> JURISDICTION OF OTHER NAMES UNDER WHICH INCORPORATION SUBSIDIARY DOES BUSINESS --------------- ------------------------ BROADCASTING AND ENTERTAINMENT Tribune Broadcasting Company Delaware Tribune Cable; Tribune Creative Services Group; Tribune Plus; Tribune Plus Corporate Sales; Tribune Television ChicagoLand Microwave Licensee, Inc. Delaware ChicagoLand Television News, Inc. Delaware ChicagoLand Television/CLTV News KHWB Inc. Delaware KHWB-TV KSWB Inc. Delaware KSWB-TV KTLA Inc. California KTLA-TV KWGN Inc. Delaware KWGN-TV Oak Brook Productions, Inc. Delaware Tower Distribution Company Delaware WGN Cable; Superstation WGN Tribune Broadcasting News Network, Inc. Delaware TribNet Tribune Denver Radio, Inc. Delaware KQMT-FM; WTTV-TV; WTTK-TV Tribune Entertainment Company Delaware Magic T Music Publishing Company Delaware Tribune Entertainment Production Delaware Company 435 Production Company Delaware 5800 Sunset Productions Inc. Delaware Chicago River Production Company Delaware North Michigan Production Company Delaware Towering T Music Publishing Delaware Company Tribune (FN) Cable Ventures, Inc. Delaware Tribune Network Holdings Company Delaware Tribune Television Company Delaware WPMT-TV; WXIN-TV; WTIC-TV; KDAF-TV; WPHL-TV Channel 20, Inc. Delaware Channel 40, Inc. Delaware KTXL-TV Channel 39, Inc. Delaware WBZL-TV Tribune Television Holdings, Inc. Delaware WXMI-TV, KTWB-TV Tribune Television New Orleans, Inc. Delaware WGNO-TV; WNOL-TV Tribune Television Northwest, Inc. Delaware KCPQ-TV WATL, LLC Delaware WATL-TV WBDC Broadcasting, Inc. Delaware WBDC-TV WEWB, L.L.C. Delaware WEWB-TV WGN Continental Broadcasting Company Delaware WGN-TV; WGN Radio; Tribune Radio Network WLVI Inc. Delaware WLVI-TV WPIX, Inc. Delaware WPIX-TV WTXX Inc. Delaware WTXX-TV Chicago National League Ball Club, Inc. Delaware Chicago Cubs Diana-Quentin, Inc. Illinois Tribune California Properties, Inc. Delaware </Table> <Page> <Table> <Caption> JURISDICTION OF OTHER NAMES UNDER WHICH INCORPORATION SUBSIDIARY DOES BUSINESS ------------- ------------------------ INTERACTIVE Tribune Interactive, Inc. Delaware chicagosports.com; chicagotribune.com; ctnow.com; dailypress.com; elsentinel.com; go2orlando.com; greenwichtime.com; ktla.com; latimes.com; mcall.com; metromix.com; newsday.com; orlandosentinel.com; recycler.com; sstamfordadvocate.com; sun-sentinel.com; sunspot.com; wb11.com; wgntv.com BlackVoices.com, Inc. Delaware blackvoices.com MISCELLANEOUS California Community News Corporation Delaware Chicago Avenue Construction Company Illinois Eagle New Media Investments, LLC Delaware Chicago Magazine Newport Media, Inc. Delaware ValuMail, Inc. Connecticut Eagle Publishing Investments, LLC Delaware GreenCo, Inc. Delaware Los Angeles Times International, Ltd. California NewsCom Services, Inc. Delaware Multimedia Insurance Company Vermont Riverwalk Center I Joint Venture Florida (Partnership) Tribune License, Inc. Delaware Times Mirror Land and Timber Company Oregon TMCT, LLC Delaware TMCT II, LLC Delaware Tribune Finance Service Center, Inc. Delaware Tribune Stock Compensation Fund Partnership Illinois (Partnership) Wrigley Field Premium Ticket Services, Inc. Delaware </Table>