[TUHS] Bell COBOL Environment?

[segaloco via TUHS]

Reading through [1], there are documents offered by AT&T for the "Level II COBOL" system, which some further research indicates is a product from Convergent (same folks as the UNIX PC.)  There's also the LPI-COBOL which appears to be a Language Processor Inc. product.

Are these the earliest AT&T endorsed COBOL solutions for UNIX or were there other efforts either promoted by Bell or even perhaps developed locally that were in any use before this version?  Or otherwise is there any other family of ubiquitous UNIX COBOL tools that was in use in the 70s and early 80s, before the timeframe of this document?

Additionally is anyone aware of any surviving code or binaries of either of these or other, earlier efforts at COBOL on UNIX?  I have no goal for this information in mind yet, but just gathering details at this point.  Thanks all!

- Matt G.

[1] - http://bitsavers.org/pdf/att/000-111_ATT_Documentation_Guide_Nov87.pdf