On page 4 of "Observations on the Banjo and Banjo Playing," I ran across this...
Because one performer uses only two fingers and thumb in "picking," is no reason why an absolute rule should be laid down that his method is the only true one- for we may shortly find another who makes use of three fingers and who renders the same music with greater ease and less "lost motion." Again we may discover a performer who makes use of only the first finger and thumb of right hand, and yet seems to have no little skill in execution."
"It is not well, therefore, to follow either of the latter examples blindly, but to endeavor to train all the fingers to be of use- each in its proper place."
Is this an indication of "two finger old time" used in late 19th century popular banjo playing?