Logic Made Easy was created in 2004.
Calculus Made Easy was created in 1910.
Espionage Made Easy was created on 2007-05-08.
Drinking Made Easy was created on 2010-10-06.
Chinese Food Made Easy was created on 2008-07-07.
Radiant Logic was created in 1995.
Chronic Logic was created in 2001.
Polish Logic was created in 1967.
Essential Logic was created in 1978.
Media Logic was created in 1984.
The Logic of Sense was created in 1969.
The Logic Factory was created in 1993.
Cirrus Logic was created in 1981.