Artist CDs 
All the following titles are the original recordings / hit versions you remember

By Simon & Garfunkel
Simon & Garfunkel - The Essential (2 CD box set of Greatest Hits)
Simon & Garfunkel - Silent Voices (Early Hits)
Simon & Garfunkel - 20 Greatest Hits (Greatest Hits)

By Tom & Jerry
Tom & Jerry - Their Greatest Hits Vol 1 (Greatest Hits)
Tom & Jerry - Their Greatest Hits Vol 2 (Greatest Hits)

Compilation CDs
All the following titles are the original recordings / hit versions you remember
These CDs include various artists

No compilation CDs are available by this artist at the moment 

45 RPM Records
All the following titles are brand new 45s and are the original recordings / hit versions you remember. 

Click here for listing of Simon & Garfunkel 45s available