hi, ruthie. if the saturday evening post article was written in the late 1940s or the early 1950s, then the answer is yes, it was written by my dad. but the account of your ancestors in the book i mentioned is much more complete, back to the migration of your great grandfather from kentucky to southern illinois.
i found two different editions of his book--the one i talked about before, and an abridged version in paperback published in 1952. i haven't seen the abridged version, but the one you would want is the hard backed book published by harpers in 1950. that would hold the complete account of what he wrote.
the article i read earlier in this thread, written in 2008 by phil luciano, looks like a lot of the information was gleaned from dad's book.
art---fyi---there's also a lengthy account of charlie birger's life in my dad's book, which might interest you.