Welcome to MAPPER Guru, home of

Read a brief history about "Mission Critical" MAPPER, by Gerry Del Fiacco:
PDF format       Word format

Take a YouTube video tour of MAPPER Memorabillia, complete with the MAPPER Song!

Unisys announces Business Information Server (BIS) Release 49R1

A Brief History of Computers, according to Unisys

A MAPPER introduction, presented by Matt Schleuter,
son of Lou Schleuter, inventor of MAPPER

More MAPPER Youtube videos can be viewed here.

Want a free utility? Try out the GURU Calculator

In the early 1990's I wrote a series of articles published in Unisys World called Make Mine MAPPER,
and was also published a couple of times in UniReview and The M Word.

Where have all the MAPPERites gone? Come join us at the Unisys (BIS) MAPPER LinkedIn Group.

Here are a few kudos I've collected over the years.

Before discovering MAPPER in 1982, I had a band in the mid-1970s called White Light,
based in Austin, Texas, first formed in the late 1960s in New Orleans, LA.
You can read our story here.

Here are a few things that keep me busy these days:

T.O.M.B. - The One Man Band ©
Supercar Fan Page
Supercar Black Rock One Archive
Rob's BayouBQ Sauce ©

MAPPER ® is a registered trademark of the Unisys Corporation.

MAPPERGuru was designed and is maintained by Rob Haeuser © 2025, All Rights Reserved