Sorry, there's no such website that I am aware of. You can, of course, download your own copies of the current USA Philatelic and start your collection from there. I started doing it awhile ago and have them as far back as Quarter 1 of 2011.
I think the idea in the eyes of the USPS is that since the purpose of USA Philatelic is to provide a catalog of ordering information, they don't want older editions to be available on-line as it will confuse the shopping public about what is/is not currently available for sale from Stamp Fulfillment Services.
However, if you want to read some of the stores that go back a few issues ago, there is this link that shows the catalog volume covers and some of the articles that were included:
http://usap.co/volumes/