Blackstone, a New York investment firm, has paid $78 million for Northeast Tower Center, a 301,208-square-foot retail property in Philadelphia, according to those familiar with the transaction. Paramount Realty Services Inc. of Lakewood, New Jersey, sold the center at 4640 Roosevelt Blvd. It is anchored by a 119,388-square-foot Walmart and counts Staples, Ross Dress for… Read more »