HP Calculator Opcode Map
Sun Aug 16 18:17:42 2015 - permalink - - http://www.hpmuseum.org/cgi-sys/cgiwrap/hpmuseum/articles.cgi?read=86

http://h20331.www2.hp.com/hpsub/downloads/S04_Jul12_Store & Recall on HP CaLCS V5.pdf
Sat Aug 15 15:20:46 2015 - permalink - - http://h20331.www2.hp.com/hpsub/downloads/S04_Jul12_Store%20%26%20Recall%20on%20HP%20CaLCS%20V5.pdf

Woodstock HP-21 HP-25
Sat Aug 15 14:46:47 2015 - permalink - - http://home.citycable.ch/pierrefleur/Jacques-Laporte/Woodstock/ws_HW_main.htm

HPCC: Handheld And Portable Computer Club
Tue Aug 11 12:00:01 2015 - permalink - - http://www.hpcc.org/

Hewlett-Packard HP-67 Emulator - Free Download - Tucows Downloads
Tue Aug 11 10:29:08 2015 - permalink - - http://www.tucows.com/preview/8307

HP 15c Limited Edition - TheCalculatorStore
Mon Jun 29 16:02:30 2015 - permalink - - http://www.thecalculatorstore.com/HP15c-LE

EDA360 and the brand new Hewlett-Packard 15C Limited Edition RPN pocket scientific calculator | EDA360 Insider
Mon Feb 16 14:56:31 2015 - permalink - - https://eda360insider.wordpress.com/2011/09/17/eda360-and-the-hewlett-packard-15c-limited-edition-calculator/

HP 15C Clone
Fri Feb 13 12:13:19 2015 - permalink - - http://www.hpmuseum.org/cgi-sys/cgiwrap/hpmuseum/archv020.cgi?read=187246

HP-15C Synthetics
Tue Feb 3 13:33:56 2015 - permalink - - http://www.brouhaha.com/~eric/hpcalc/hp15c/tennant83.html

HP Voyager Scancodes
Thu Jan 29 20:54:28 2015 - permalink - - http://web.cecs.pdx.edu/~rc/Projects/HDL/Voyager/vger-scan.html