Philadelphia Posts Gay-Welcoming Street Markers in Center City by KYW's John McDevitt A dedication ceremony was held Wednesday afternoon to unveil street signs to define Philadelphia's famed "gayborhood." Singing "Somewhere Over the Rainbow," a group of about 100 gathered at the corner of 13th and Locust Streets, in the Washington West neighborhood, where one of 36 discreet rainbow signs were unveiled. The sign is the same size as the Locust Street sign and fastened directly beneath it. Tami Sortman is president of the Philadelphia Gay Tourism Caucus: "Philadelphia four years ago started a gay-friendly campaign here to bring gay travelers...