Status Key Publisher Name Picture Types City State Reerence code/scan Alt Key PUBO O OOOOOOOOOOOOOOOOOO OO PUB O'Brien O'Brien, views U.S. UN OBRI PUB O'Conner O'Conner Fergus & Co., Dublin,England Dublin GB OFCD PUB O'Donalson O'Donaldson J.J., 221 Park Ave.,views Baaltimore MD ODON PUB O'Nrall O'Neall Specialty Co., prelinens McAllen TX ONSC ECK PUBa O'Neil O'Neil Enterprises, chrome,views Sonoma CA ONEN PUBa O'Neil O'Neil Enterprises, chrome,views Sonoma CA ONEN PUB O'Neill O'Neill Photo Co., Indian chief real Photos U.S. UN ONPC PUB Sweet O.& E.E. Sweet (shield,star & Stripes behind POST CARD),pre-1920 B/W California views Los Angeles CA OEES O.& E.E. PUBa OCP O.C.P.Co., holiday,prelinen Unknown UN OCPC PUB Gibson O.Gibson Art Co., Cincinnati OH OGIB G.A.Co. GIB PUB News O.K.News Corp., Geneva NY OKNC O.K.News PUB Newman O.Newman Co.,The, prelinens,views Los Angeles CA ONC PUB Observer Observer Printing House, Charlotte NC OPH PUB Ocean Ocean View Hotel, St Augustine FL OVH PUB Octava Octavo Press, views Sprinfield IL OCTA PUB Octochrome Octochrome, prelinen U.S. UN OCTO PUB Odeon Odeon Cafe,Market & Eddy Streets, San Francisco CA OCME PUB Odom Odom, Cont Los Alamitos CA ODOM PUB Official Offical Colonial Williamsburg Card, Chromes U.S. VA OCWC HSC PUBa Office Office Shop,The, chrome,views Calumet MI TOSC CURT PUB Official Official United Nations Photo, views,chromes New York NY OFUN PUBa Official Official War Committee, military,views U.S. UN OFWC PUBa Official Official War Photographs, views, Military, Passed by Censor,series Unknown GBcy-reserved OWP PUB Ogden Ogden A.T., views,undiv Poughkeepsie NY OATP PUBa Ogden Ogden Murle, chrome,views Carmel CA MURL DP PUB Ogden Ogden News Company, B/W views,prelinens,military Ogden UTSee GCC OGDE ECK PUBa Ogden Ogden Photo & Engraving Co., chrome,views Natchez MS OPEC DP PUB Ogdensburg Ogdensburg Wholesale Merchantile,Co., Ogdensburg NY OWMC Puba Ogilvie Ogilvie J.S. Pub.Co., views,blacks U.S. UN OGIL PUB Ohio Ohio Historical Society, Columbus OH OHSC KOPP PUBa Ohio Ohio Natural Color Card Co., chrome,views Cleveland OH OHIO COLO PUBa Ohio Ohio Natural Color Card Co., chrome,views,sports Cleveland OH ONCC COLO PUBa Oklahoma Oklahoma Card Co., chrome,westerns Oklahoma City OK OCCO PUBa Oklahoma Oklahoma Card Co., chrome,views Oklahoma City OK OKCC PUBa Oklahoma Oklahoma Card Co., chromes,views Oklahoma City OK OKCC PUB Oklahoma Oklahoma City News Co., views Oklahima City OK OCNC PUB Oklahoma Oklahoma Heritage Association, Oklahoma City OK OHA HSC PUB Oklahoma Oklahoma News Co., linens,views,chromes,comics,famous people Tulsa OKSee ECK,COLO OKLA CURT PUBa Oklahoma Oklahoma News Co., chrome,views Tulsa OK OKLA CURT PUB Old Old Book Store,The, 41 South Howard St.,views Akron OH TOBS PUB Old Old Fort Niagra Assoc.,Inc,The, linen Youngstown NY OFNA PUB Old Old Lamp Post,The, chromes Virginia City NV OLP HSC PUB Old Old Mission San Juan Capistrano, tinted views SJ Capistrano CA OMSJ ALB PUBa Old Old Sacramento Stamp Company, cont,views,stamps cards,railroad Sacramento CA OSSC PUB Old Old Trail News Agency, chromes Santa Fe NM OLDT COLO PUB Oldroyd Oldroyd O.H., B/W,views,historical Washington DC AHOW PUBa Oldroyd Oldroyd O.H., Presidential,views Washington DC OHOL PUB Olson Olson News Co., prelinens,views,large letters Sioux City IA OLSO ECK PUB Oluroyd Oluroyd O.H. Lincoln Birthday Series U.S. UN OOH PUB Omaha Omaha News Co.,(also Company), Indian Chiefs c1889,leipzig,dresden,Germany Omaha NE OMAH ANCY PUBa Omaha Omaha Nov.& Nov.,Co.,Dist., undiv,views,"elite",made in Germany,c1906 Omaha NE OSNC PUB One One World Artist Cooperative, views,chromes New Haven CT OWAC PUBa Opal Opal Drake Photoprint Co., views Oklahoma City OK ODPC PUBa Opryland Opryland, chrome,views Nashville TN OPRY PUB Orange Orange County Life,17805-G Skypark, Circle Irvine CA Cont OCL DP PUB Orange Orange News Co., linens,chromes,views Orlando PASee CTA,CTAC ORAN CURT PUB Orcutt Orcutt J.C.& C.E.,Pub., views Lincoln NE OJC PUB Ordway Ordway F.M.& Sons, undiv,views Merced CA FMO EHM PUBa Ordway Ordway, Photo cards,B/W,views U.S. AK ORDW AGFA PUB Ore Ore. News Co., Portland OR ONCP O.N.C.P.O. PUB Oregon Oregon News Co.,The, prelinens,views Portland OR TONC ANCA PUB Oregon Oregon Publishing assoc., advertising cards Portland OR OPAP PUB Oregon Oregon State Highway Commission, views unknown OR OSHC ECK PUBa Oregon Oregon State Highway Department, chrome,views U.S. OR OSHD PUB Orell Orell Fussil, Zurich,Germany Zurich GY OREL PUB Original Original New Alamaden Museum, chromes New Almaden CA ONAM MR PUB Osawatomie Osawatomie Chamber Of Commerce, chromes Osawatomie KS OSAW COLO PUBa Osborn Osborn Cal, military,views U.S. UN CALO PUB Orborne Osborne Ltd., undiv, (Osocraph) views,Germany New York NY OSBL PUB Osborne Osborne Post Card Co., Indian in oval, 1 feather,cloud behind-R New York NY OPCC PUB Osborne Osborne Pub Co., also New York,NY,Calendar PC's 1911 adv.,Lighthouse Philadelphia PASigned:Clarence Underwood OPCP Eagle Shield OPCP PUBa Osborne Osborne W.W., tinted views Santa Barbara CA WWOS ALB PUB Osborne Osborne's (Book Store) views,hand colored Santa Barbara CA OSBO ALB PUB Oscar Oscar M Kirsch Orchard Nursery, chrome Honolulu HI OMKO HSC PUB Oscar Oscar Newman Co.,or Postcard Co.,or O., & San Francisco,CA,pre-1920 California views Los Angeles CASEE NOCL ONC O.N.C. PUB Osgood Osgood H.W.Photographer, Pittsfield NH OHWP PUB Osgood Osgood Phot Supply, views Coalesbury IL OSGO PUBa Ostdick Ostdick, military,views U.S. UN OSTD PUB Ostrander Ostrander-Sams Corp., views Waukegan IL OSTR PUB Oszard Oszard,William H.,Co., Wildwood NJ IWHC PUBa Otis Otis E.F., military,views U.S. UN EFOT PUB Otis Otis, Undiv views,thousand Island U.S. UN OTIS PUBa Otisville Otisville Variety Shop, B/W,views Otisville NY OTIS PUB Ottenheimer Ottenheimer I.& M., c1902,humor,c1909,Political,inaug.Taft,Earthquake-1906,ship Baltimore MD OTT PUBa Otto Otto Moore & Co., linens,views Texarkana ARSee ECK OTTO CTAC PUBa Otto Otto Moore & Son, views Texarkana TX OTMS PUB Otto Otto Ulbrich Co., linen,views Buffalo NY OTUL CTAC PUBa Ottumwa Ottumwa News Service, prelinens,views Otumwa IA OTTU ECK PUB Out Out of The West Publishing, 1857 Discovery Way,Box labels,cont,(Fresh expressions),viewsSacramento CA OOTW PUBa Out Out of The West Publishing, Continentals,label cards,"Fresh Expressions" Sacramento CA OOTW PUBa Outdoor Outdoor Films, chromes,views Kodiak AKPhotographer-Alf Madsen OUTD PUBa Outdoor Outdoor Photo, cont,views Olympia WA OPOW PUB Overly Overly Charles H., B/W etchings Harvard MASigned: Overly CHOH PUBa Owen Owen Ira E., B/W,views,interiors Petersburgh IL IROW CURT PUB Owen Owen Ira E.,The Wagon Wheel, views Petersburg IL OWIE PUB Owen Owen's New Salem Lodge, views Petersburgh IL ONSL PUB Owen Owen,F.A.,Co.,(Owen Card Pub.Co.) Also Elmira,NY. Later sole Elmira Card Co. Danville NYSee ECCE Artist: Nosworthy,Alice Cary FAO F.A.O.Co. PUB Owens Owens Bros.,Hillson,Co., Berlin & Leipzig,sepia,views,B/W,lge letters,early,undiv Boston MA OBHC PUB Pwl Owl Drug Co., undiv,views Oakland CA OLD EHM PUB Owl Owl Drug Co., undiv,views Lakeport CA OLK EHM PUB Owl Owl Drug Co., undiv,views San Francisco CA OLS EHM PUB Owl Owl Drug Co., undiv,views U.S. UN OWL EHM PUB Owl Owl Drug Co., undiv U.S. UN OWLD EHM PUB Owl Owl Gold Metal Art, U.S. UN OWLG PUB Owl Owl Pharmacy, Mt Vernon WA OWLP PUB Ozley Oxley Stores,The, views Southington CT OXLE PUB Ozark Ozark Grocer Company, views Fayetteville AR OZGC PUBa Ozark Ozark Post Card Publishers, linen,views Monett MO OPCP CTAC PUB Ozark Ozark Postcard Publisher, Cont. Kimberling City MO OPPK PUB Ozark Ozark Postcard Publishers, & Monett,Map cards,chromes,views,large letters,humor Springfield MOSee CURT Artist: H.Dean OZAR ECK