Identifying Engine Rebuilder

[Mike1291]

I'm going through the mental process of seeing if my engine can support some modifications (B cam, 6.5 head, larger carb). I do not know who rebuilt my engine, and therefore am questioning the quality of it. I do, however, have some paperwork from the rebuild that might help. It was done in 1977, and I've heard that babbitt quality varied from vendor to vendor back then.

From the attached paperwork, does anyone have a clue as to who might have done it? If it helps the car was in Rhode Island in the time frame that the engine was rebuilt.