Gabriel F. Gargiulo
Appearance
USA based REXX expert, has written books, tutorials and courses/training materials on both Mainframe and OS/2 REXX.
Publications

- Using OS/2 REXX - QED 1993, ISBN 0-894-35449-3
- Mastering OS/2 Rexx - Wiley 1994, ISBN 0-471-51901-4
- Rexx With OS/2, TSO & CMS Features - Quick Reference Guide (Mainframe Technical Series) – MVS Training 1999, ISBN 1-892559-03-X
- The REXX Language on TSO - Self published 2012 - ISBN 1479104779
- TSO CLIST to TSO REXX Conversion Handbook - 2015, ISBN 1-5086-6849-3