Does anyone know offhand the record for most career errors (at any position?) I’m guessing it’s someone like Bill Dahlen—i.e. a long-career 19th-century shortstop.  But the encyclopedias and B-Ref are silent on the issue.

Bob:

http://www.baseball-almanac.com/recbooks/rb_1ber.shtml

It appears that Dahlen is correct followed by Fred Pfeffer at second base.....

Thanks, Harveys!  Baseball Almanac continues to be a source of strange wonders.