From the publisher’s description:
In this provocative new study, William Newman presents to the reader “whatever intentions on Beethoven’s part can be documented or can be supported by reasoning and analysis in the primary sources for his music.” His aim, in brief, is to get as close as possible to the performance practices Beethoven himself had in mind for his piano music, both solo and ensemble works.
Newman, William S. (NHC Fellow, 1983–84). Beethoven on Beethoven: Playing His Piano Music His Way. New York: W. W. Norton & Company, 1991. ISBN 9780393307191.