Q:

Is the telemetry for the Surveyor moon missions still existent? 

Is the telemetry for the Surveyor moon missions still existent? 
Between 1966 and 1968 NASA put on the surface of the Moon five Surveyor landers.  Is the telemetry for these mission still available somewhere in archives?  I do not refer only to pictures but also to all data the probes transmitted back to the Earth. 

Surveyor 3 [NASA]

A:

NASA publishes the scientific data from each mission at the NASA Space Science Data Coordinated Archive.  
The Surveyor start page is here.  
Parts of the NSSDCA are offline today, so I can't see the data collections themselves, but it looks like most of the data is there. 
The nonscientific data (telemetry related to spacecraft operations) may not have been published.  The only missions I recall the telemetry being published for is the Apollo missions.  
Even if it hasn't been published, it's probably still in a NASA archive, it'd just take a bit more trouble to track it down and request access. 