Topps is also not the only company to produce baseball cards. There is a new reincarnation of Leaf, and Panini also makes multiple sets. Those companies just don't have the MLB license to show players in uniforms with logos or use team logos on the cards. But some people will also call the Topps set the base set or paper set or flagship set.
![](http://img.comc.com/i/Baseball/2015/Topps/2071/Bryce-Harper-(Base).jpg?id=d8dd5323-b064-4c24-9444-ed92ce07432a&size=original)
2015 Topps #207.1 - Bryce Harper (Base)
Courtesy of COMC.com