Apple /// COBOL is one of the four major development languages released for the Apple ///, the others being Pascal, Business BASIC and FORTRAN.
Developed by Micro Focus, Inc. for Apple Computer, Apple /// COBOL is compliant with COBOL-74 and the package, which Apple announced in 1982, sold for $500.
Manuals
Introduction and Operating System Manual (PDF, 184 MB)
Language Reference Manual Volume 1 (PDF, 253 MB)
Language Reference Manual Volume 2 (PDF, 134 MB)
Quick Reference Manual (PDF, 30.5 MB)
This zip file (236 K) contains disk images in DSK format for the floppy disks included in the Apple /// COBOL package. These are:
681-0055-A: COBOLBOOT
681-0056-A: COMPILER
681-0057-A: ANIMATOR
681-0058-A: FORMS-2
681-0059-A: DEMO
This PDF file (10.1 MB) contains scans of the Apple /// COBOL packaging, User Input Report, Packing List, and Software Licensing Agreement.
This zip file (557 MB) contains all of the above in one convenient package.

Here’s the Apple /// COBOL product announcement from the July 5, 1982 issue of InfoWorld.