I wasnt sure where to put this... I ordered some WWII books off ebay a while back... going through them I found a loose page, not from the book... just like a book mark, so I had to scan it... its gotta be pretty old...
I think they might still be around. When I searched for alnavo and westfield I got some more scanned flyers like what you posted and the images were all hosted on alnavco.com website. The company still makes metal model but now lists the company address as being in the state of VA now: http://alnavco.com/