Sorry to say I never knew Bob. Heard positive things about him most of my career.
In the mid-70's, I was a dayworker at Lewes with Tom LaPrade, Dave Canady and Jack Fessler. Jack and Dave got along well but took particular delight in messing with each other.
Jack apparently owed Dave one so one day when Dave was out of the office, Jack stole Dave's dungaree ball cap and held it hostage. Dave returns, notices his cover missing and immediately turns to Fessler and threatens mayhem if he doesn't return it...toot sweet.
Jack smiles and rips the bill off the cap and throws both pieces to Dave. I thought Dave and Jack were coming to blows.
I picked up the destroyed cover and read the stencil....Bob Masciangioli.