Marvin Mallon

Did you know that two different varieties of the Canadian one cent piece were minted in 1941 and that one of them is worth as much as $2,000 today? Cu …

The purpose of this application is to acquaint the viewer with the lives of the ten most famous chess Grand Masters. A portrait of each accompanied wi …

Enjoy a collection of the works of twelve prominent Symbolist artists. Twenty-five of each of their most famous paintings can be viewed as full-screen …

“Canada Classic Coins” is a companion program to our popular “Canada Coin Checker”. It differs in that it is restricted to coins that have a potential …

The purpose of this application is to acquaint the viewer with the lives of ten more of the most famous chess Grand Masters. A portrait of each accomp …

If you are a "Potter Person", this app is for you. On November 19th, 2013 the United States Postal Service issued a set of five souvenir sheets of fou …

The purpose of this application is to acquaint the viewer with the lives of ten more of the most famous chess Grand Masters. A portrait of each accomp …

The purpose of this application is to acquaint the viewer with the lives of thirty of the most famous chess Grand Masters. A portrait of each accompan …