I'm not sure if this is the appropriate section for this question, but there doesn't appear to be a "SAS History" community.   I'm trying to figure out the timeline of SAS releases for PROC DS2 and its predecessor PROC TSPL. I'm putting together a presentation and would like to provide context about where this procedure comes from. I'm hoping some members of the community can fact-check this or help fill in the holes. As best I can tell the sequence of events goes something like this:   PROC TSPL was introduced as part of SAS 9.2 (TS2M3?). I'm not sure if it was part of a specific SAS product at this point. TSPL is renamed to PROC DS2 in SAS 9.3 but is still considered an "experimental" procedure. DS2 is released as a production procedure in SAS 9.4 as part of Base SAS. Was TSPL/DS2 originally associated with a specific SAS product, or if it was always intended to be part of Base SAS?   Ideally I'd like to be able to attach dates to the timeline--my memory before SAS 9.3 is fuzzy. Is it possible to look up the dates for historical SAS releases? There is a table on Wikipedia, I don't think it's complete.   Any help would be much appreciated! ... View more