20th century, the traditionally working-class neighborhood saw decline in the 1950s as many Philadelphians moved to the suburbs. White flight eventually took its hold on the neighborhood throughout the 1970s and 1980s. By 1990, over 30% of the storefronts on Frankford Avenue were vacant. Since this time, Frankford has seen a push for improvement. In 1993, the Philadelphia City Planning Commission adopted the Frankford Plan as a blueprint for revitalizing the neighborhood. Although many vacant storefronts remain, businesses catering to new customers have opened in recent years. Many business owners hope that gentrification of neighborhoods such as Fishtown and Kensington will spread north into Frankford. Others worry that previous attempts at improving Frankford have not been as effective as hoped, with most areas of the neighborhood still suffering from street crime and open-air drug sales. Between 1985 and 1990, a serial killer known as the "Frankford Slasher" murdered several women in the neighborhood. Although several suspects were taken into custody, the actual killer has never been identified. Notable sites Museums Grand Army of the Republic Museum and Library, 4278 Griscom St. Historical Society of Frankford, established 1905, 1507 Orthodox St. Churches The Baptist Worship Center, 4355 Paul St. St. Bartholomew R.C. Church, 5600 Jackson St. By Grace Alone Christian Reformed Church, 1300 Dyre Street Campbell African Methodist Episcopal Church, 1657 Kinsey St., founded 1804 Central United Methodist Church, 4620 Griscom St. Christ Independent Baptist Church, 1618 Womrath St. The Church of Jesus Christ of Latter-day Saints, 4610 Frankford Ave. Sixth Church of Christ, Scientist, 4720 Leiper St. Crossroads Community Church, 4624 Leiper St. Faith Assembly of God, 5049 Charles St. Faith Tabernacle, 1744 Foulkrod St. Frankford Friends Meeting House, 1500 Orthodox St., established 1684 Frankford Memorial United Methodist Church, 1300 Dyre St. Hermon Presbyterian Church, 4835 Frankford Ave. Holy Cross Church of Christ, 1822 Orthodox St. International Druidic Society, 4455 Frankford Ave. St. James Lutheran Church, Pratt St. and Castor Ave. St. Joachim Church, Philadelphia, 1527 Church St., established 1845 St. John Apostolic Church, 4404-06 Paul St. St. Mark's Church, Frankford, 4442 Frankford Ave., is an Episcopal Church, established 1832 Mar Thoma Church St. Mary's Malankara Orthodox Syrian Cathedral, 1424 Orthodox St. Mizpah Seventh-day Adventist Church, 4355 Paul St. Church Of Christ (Iglesia Ni Cristo), 1676 Ruan St. By Grace Alone Frankford Fellowship, 4730 Oxford Ave. New Beginning Church of Philadelphia, 4200 Roosevelt Blvd, 19124 Northeast Baptist Church, 4744 Tackawanna