WAKEFIELD, MA–(Marketwire - September 30, 2009) - Franklin Street Properties Corp. (”FSP”, “our” or “we”) ( NYSE Amex : FSP ), an investment firm specializing in real estate, announced today its acquisition of an office building in Falls Church, Virginia for a purchase price of $73,000,000. Completed in 2001, the building contains approximately 252,613 square feet of rentable space and 100% of …