Genes BMX has posted the 1996 Catalog here. http://sports.webshots.com/photo/2346572010080637499nPDvtV
I cant grab the images since they are flash. Here are the highlights.
Models:
*Note all the 1996 models now feature 1 1/8 headsets, threadless forks. Chrome front ends are now available.
CR20 RX (Pro XL frame with 20.5 Top Tube, came with Aluminum Works Link)
CR 20 R (Pro frame with 19.25 Top Tube, came with Aluminum Works Link)
CR 20 S (Pro frame with 19.25 Top Tube, came with 4130 Tri Link)
CR 24 and JR20 RX were both 1 piece Auburns)
CR 20 I (Pro frame , 4130 1 piece frame, a first for Auburn)
The Works Link is now available in Black as well as Purple and Green. The Blue is no longer available.
Note the measurements are from the 1996 catalog, the first time they list frame specs.
Auburn BMX 
Can you tell the model by serial number? How did I end up with a TriLink with a 20.5″ top tube?