Flowercalc
Links
The best Texas Instrument site : datamath
good assorted collection : electron
enormous collection : calculators.de
nice layout : collectors world
special casio site : casio calculators
another good TI-site : MyTI
programmable calculators : rskey
dutch slide rule organisation : www.rekenlinialen.org
dutch old calculator museum (mostly mecanical)
special site for calculating history : Nathan Zeldes
nice HP site : hpcalculators.net
specialized
CASIO site : casio.ledudu.com