Oh well.. I found an old newspaper where the City of Alexandria was Planning to repurpose a Interarms warehouse..from 7/18/12. The article is right on the front page with title in red letters... Indigo Dreams: Carr Hospitality moves forward with plans to redevelop waterfront property.http://connectionarchives.com/PDF/2012/071812/Alexandria.pdf
But..I did find some really neat other stuff.
Their building with their dock right on the Potomac River...the days of no import inspections or harbor police.
Interarms dock and warehouses, Port of Alexandria, Virginia circa 1963. The square building with the brown two tone roof on the bottom right hand corner of the image was Potomac Arms. Founded by an Interarms employee, it was an area favorite. From: The Lore of Guns website.
The retail outlets..
Potomac Arms was a major mail order retailer of firearms and ammunition obtained from Interarms and was owned by a former Interarms employee. It also housed for a time the retail outlet of Interarms, variously named "Ye Olde Hunter" and "Hunters Haven" on the first floor. Potomac Arms closed in 2006. From: The Lore of Guns website.
Ye Olde Hunter is right there on the page RM scanned, and above is where it would have come from, way back in the day.
Potomac Arms closed it's doors in 2006, The city of Alexandria took over the property, more than likely to rehabilitate it and help promote Old Town Alexandria tourism.
Photos from this articlehttp://unblinkingeye.com/Guns/Interarms/interarms.html
Which quotes to here... has some more neat info, and mentions SKSs and Chinese Aks. http://gunlore.awardspace.info/gunknow/interarms.htm