If you have access to MR's digital archive (or otherwise have access to the issue) check out the November 1958 issue of MR for an article on his Norfolk & Ohio layout, preceded by a truly impressive photo that takes up two pages; one of the more realistic photos ever published in MR.
Dave Nelson
That's too funny, I just replied to the OO thread on the main section and mentioned Carl. He had a rather large OO layout back in the day which was featured in MR at least once. Appel Jewelers is still in business in Allentown. Very well known to locals.
--Randy
Modeling the Reading Railroad in the 1950's
Visit my web site at www.readingeastpenn.com for construction updates, DCC Info, and more.
I googled Carl Appel and found an obit from June 1997. He apparently lived in Coopersburg and owned Appel's Jewelry in Allentown. http://articles.mcall.com/1997-06-25/news/3140250_1_big-game-east-africa-allentown-elks-club
Gary