I have been searching on the Internet for some time looking for neo materials but searches yield only little materials. But The Library of Congress has the original Rapid Method of Neo - so, why doesn't somebody go there, borrow a book, have it scanned and posted here, on Wikipedia? 
http://catalog.loc.gov/cgi-bin/Pwebrecon.cgi?Search_Arg=Rapid+method+of+Neo&Search;_Code=GKEY%5E*&PID;=UiYWt5ukOI8jeCjL7yydwSi2ZEytV0v&SEQ;=20081215183629&CNT;=100&HIST;=1