- Maual 82422A
- Midway Village Museum display of Woodward governors.
- Oldest found advertisement on the N.C. Tompson's Reaper Works.
- Rockford song book from the archives.
- SG GOVERNOR BULLETIN 04003 PAGE 10.
- SG GOVERNOR BULLETIN 04003 PAGE 11.
- SG GOVERNOR BULLETIN 04003 PAGE 12.
- SG GOVERNOR BULLETIN 04003 PAGE 13.
- SG GOVERNOR BULLETIN 04003 PAGE 14.
- SG GOVERNOR BULLETIN 04003 PAGE 2.
- SG GOVERNOR BULLETIN 04003 PAGE 4.
- SG GOVERNOR BULLETIN 04003 PAGE 5.
- SG GOVERNOR BULLETIN 04003 PAGE 6.
- SG GOVERNOR BULLETIN 04003 PAGE 7.
- SG GOVERNOR BULLETIN 04003 PAGE 8.