Karl is the US Editor for Model Auto Review (a DHOF Community Supporter), a frequent contributor on many diecast forums and also a Curator and Champion on hobbyDB. Over the years, Karl has written articles on European diecast such as Märklin, Tekno, and Vilmer for Model Auto Review and Model Collector (also a DHOF Community Supporter). He has been collecting models in 1/43 scale since he was a boy and now concentrates on Alfa Romeo models and some obsolete European brands. Karl commented “I am excited that the Hall has become much more international and is now truly representing all scales”.