Oak Terrace Motel – Eden – Salisbury Md
Oakcrest Motel – Perryville, Md
Oakland Opera House – Oakland, Md.
Oakland Station – Garrett County – B&O
Oceanic Motel – Ocean City, Md
Oakleigh Station– Baltimore County – Ma&Pa RR
Ocean City Maryland :
Sandy Hill Motel
Satellite Motel
Sea Isle Motel
Surf Rider Motel
Ocean City Station – Worcester County – PRR
Odenton Station– Anne Arundel County – PRR
Oldtown Station – Allegany County – WMRR
Open Hearth Motel – LaPlata Md.
Opera House – Annapolis, Maryland
Opera House – Belair, Maryland
Opera House – Boonsboro, Maryland
Opera House – Brunswick, Maryland
Opera House – Cambridge, Maryland
Opera House – Centreville, Maryland
Opera House – Chester, Maryland
Opera House – Churchill Maryland
Opera House – Crisfield, Maryland
Opera House – Elkton, Maryland
Opera House – Frederick, Maryland
Opera House – Federalsburg, Maryland
Opera House – Frostburg, Maryland
Opera House – Holman’s -Friendsville, Maryland
Opera House – Havre de Grace, Maryland
Opera House – Middletown, Maryland
Opera House – Midland, Maryland
Opera House – New Windsor, Maryland
Opera House – Northeast, Maryland
Opera House – Oakland, Maryland
Opera House – Oxford, Maryland
Opera House – Rockville, Maryland
Opera House – Salisbury, Maryland
Opera House – Smithsburg, Maryland
Opera House – Snow Hill, Maryland
Opera House -St. Leonards, Maryland
Opera House – Stevensville, Maryland
Opera House – Westminster, Maryland
Opera House – Williamsport, Maryland
Opera House – Woodsboro, Maryland
Oriole Cars Sales – Baltimore City Car Dealership 1950’s
Orpheum Theatre – Baltimore City, Md.
Outten Theatre – Snow Hill, Maryland
Outten’s “Colored” Theatre – Snow Hill, Maryland
Overlea Theatre – Overlea, Md.
Owings Station – Calvert Co – Chesapeake Beach RR
Owings Mills Station (2) – Baltimore County – WMRR
Oxford Station – Talbot County – PRR
Material you will find on Kilduff’s Maryland pages for the Letter “O”