The 1000 block of North 6th Street in Harrisburg held architectural, historical, economic, cultural, and political importance as a prominent group of 19th-century buildings tied to multiple strands of local and American history. A Dutch revival style house at the Boas Street corner served for a time as the parsonage of the former Ridge Avenue Methodist Episcopal Church and later became part of the thriving 20th-century African-American business community along the 6th Street corridor. An earlier residence on that site had been the home of the Reverend Silas Comfort Swallow, a temperance crusader known as "No Swallow Swallow" and remembered as the only person to run for U.S. President as a Prohibition candidate. At 1002 North 6th Street, the family of Calobe Jackson Sr. lived for many years while he operated Jack's Barber Shop on the ground floor along with other nearby businesses, and his son Calobe Jackson Jr. became a noted Harrisburg civic leader and authority on African-American and local history. At 1006 North 6th Street, a French Second Empire townhouse later known as the Jackson House accommodated black travelers listed through the Green Book during segregation and hosted celebrities including Ella Fitzgerald and Louis Armstrong under proprietor German Jackson, head doorman at the segregated Penn-Harris Hotel. Jackson's adjacent restaurant, still called the Jackson House, was deeded to Dave Kegris, who continued the Jackson name and its association with hospitality into the 21st century. As surrounding properties declined, preservation and restoration efforts eventually led investors assembled by Preservation Pennsylvania to plan rehabilitation of the vacant buildings and needed new infrastructure, and in 2020, on Calobe Jackson Jr.'s 90th birthday and in honor of both Jackson families, the block's renewal was officially named Jackson Square.