Stephen B. Robinson, 42 and from Cinnaminson, New Jersey, was killed during a mass shooting at the Heritage office building, 383 Kings Highway in Cherry Hill, on June 21, 1972. The gunman, identified as Edwin James Grace, entered the building about 2:30 p.m. armed with two sawed-off .22-caliber rifles and a large supply of ammunition, and proceeded through offices, firing at male employees while sparing women as he passed.

Robinson was one of six men listed among the dead; six other men inside the complex were gravely wounded. Grace retreated to a basement area and shot himself in the head. He was found alive, taken to Cherry Hill Medical Center, and died there on July 8, 1972. Authorities named Grace as the sole perpetrator and no other suspects or accomplices were reported.

Robinson’s death was part of a sudden, targeted attack on employees of Key Personnel, Inc. in an otherwise routine workday. If anyone knew Robinson or was working in the Heritage building that day, did they notice anything unusual about people coming or going before the shooting?