I have a small company of my own, and have been selling HP since 1976. I still have some old items in their original boxes, unopened. Maybe these will be of any interrest for some of You.
HP-41 Items:EXTENSION MODULE:
HP82120A Extended Functions/Memory Module.
HP82182A Time Module.
HP82183A Extended I/O Module.
HP82184A Plotter Module
00041-15005 Surveying Pac
00041-15018 Aviation Pac
00041-15022 Games Pac
00041-15023 Home Management Pac
00041-15024 Clinical lab & Nuclear Medicine Pac
00041-15042 Auto-Start/Duplication ROM
HP82106A Memory Module
BOOKS:
HP82160A HP IL-Module Owners Manual (also have this one in Swedish)
HP82162A Thermal Printer Owners Manual
00041-90526 HP-41CV Owners Manual Basic Operation
00041-90402 HP-41CV Standard Applications
HP82104A Card Reader Owner's Handbook
HP82143A Printer Owner's Handbook
00041-90328 HP-41C/CV Operating Manual A Guide for the Experienced User
00041-90515 Swedish HP-41CX Bilaga Unika Operationer
LIBRARY SOLUTIONS:
00041-90136 HP-41C Real Estate
00041-90138 HP-41C Solar Engineering
00041-90142 HP-41C Physics
00041-90086 HP-41 Lend/Lease/Savings
00041-90094 HP-41 Stat/Marketing/Sales
HP82200A Toucchpad
More items will follow later
Best regards Jarle