1993 was the first year of the Iowa Specialty Soybean Test Report. It was issued in the AG series as AG 141-3. Call number: S451 I8 A4x (Special Collections)
1994 & 1995 were called Iowa Gold Specialty Soybean Test Report and issued as AG 141-4 and AG 141-5.
All 3 of these specialty reports were also issued as inserts in the Feb. 1994, 1995, and 1996 issues of Iowa Soybean Review. Call number: SB205 S7 I56x (Parks Library General Collection).
These specialty soybean tests appear to have been folded into the regular Soybean Yield Test Reports in later years; however some specialty soybean test results for 2000-2004 are available online as part of Iowa State Research Farm Progress Reports in the Digital Repository @ ISU.