I am not sure if someone has already posted this, but evidently the Los Angeles Times Magazine (an insert publication to the Sunday issue of the Los Angeles Times newspaper) runs a weekly pictorial of "50". Visit this link to see past "50" articles, including last Sunday's issue of 50 Las Vegas casino chips. While the on-line version does not seem to give credit, the actual magazine page includes this statement (in ver small print, running vertically) "From the collection of Peter Rizzo at oldvegaschips.com".

Link is here: http://www.latimesmagazine.com/50-category/

Jim