Dan,
Digitized versions are available, but not easily. Joe has access to it through Villanova University (the BBall team just got hosed by the refs versus Georgetown) where he is a chem prof. Larger libraries in town, like the Free Library has them on microfilm. Penn has some digitized, but they don't go back far enough. The earlier editions are on microfilm.
I might be in LA soon. I'll let you know.