https://ftp.mirrorservice.org/sites/www.bitsa … Drivers_198506/ There you go
http://www.bitsavers.org/pdf/ibm/pc/3270/3270 … Drivers_198506/ or there, the main site is still there, always worth a little directory backtracking, why didn't I try that first instead of going round and round until I tripped over the answer

Thank you for answer. I've seen this but it contains .sys files rather than .com files like stated in the PDF file.