Where can I find information for nominal 1", 1-1/4", and 1-1/2" stress-rated boards?

• According to the Southern Pine Inspection Bureau's (SPIB) 2002 Standard Grading Rules for Southern Pine Lumber: Section 265 stress rated boards:
  Industrial 55 (IND 55) shall be graded as per No. 1 dimension.
  Industrial 45 (IND 45) shall be graded as per No. 2 dimension.
  Industrial 26 (IND 26) shall be graded as per No. 3 dimension.