Paperbacks Unlimited

For years, Paperbacks Unlimited was a fixture in Ferndale, but I believe it started out in Highland Park. Anyone out there remember where the original Highland Park location was?

Thanks in advance.

This is from a 2005 article in Metro Times when PU closed:

From its nascent days as Highland Park Newsstand [[established 1918) on the corner of Woodward Avenue and Manchester Street across from the Ford plant to its reincarnation as Paperbacks Unlimited in 1957 to its shift to Ferndale in 1969, the bookseller, owned by Hughes and his deceased business partner Charles Harte, has been a part of the Motor City for almost a century.