If you like Unicode-like charts, but with all 256 codepoints on one sheet,
and decimal codepoint values in every block, I found an online doc. that
has many encodings. These are pre-Unicode, copyright 2003 (but, some
probably prepared earlier?) so not too outdated. More in [vellum]. (I
sent that message thinking the © date was around 1997.)

--
Nicholas Bodley /*|*\ Waltham, Mass. (Not "MA")
The curious hermit -- autodidact and polymath