We started about 13 or 14 years ago with just 2 tractors, 1 for me, and 1 for my son.  No we have a few more.  60RC, 60 STD, 60IND, 60 WF, Cockshutt 60RC, Cockshutt 60 STD, 70 RC, 70 RC SF, HP 70 RC, 70 IND, 70 Orchard, Cockshutt 70 STD, 80 RC, 80 IND, 80 STD,88 RC old style, 1850 Dsl WF, 18-36, 28-44,18-27,Cletrac BGHS, and a 50 Ricefield.  
Would appreciate hearing from anyone who has any information on the 50.  Seems to be an oddball variation of a 90, with high clearance front axle and Ricefield equipment, and has an agricultural serial #, rather than an industrial serial #.  If you are ever in Western IL, give us a call and stop by.  Terry.