- ArchiefA1 - Seager Wheeler and Family fonds
- ReeksL1 - Letters
- DeelreeksL1.5 - Publications/Press
- BestanddeelLF27 - The Grain Growers Guide
- Stuk2021-L-174 - The Grain Growers Guide, Manager of Book Department (Aug 3)
- Stuk2021-L-218 - The Grain Growers Guide (Mar 20)
- Stuk2021-L-241 - The Grain Growers Guide, P.M. Abel (Feb 25)
- Stuk2021-L-243 - The Grain Growers Guide, P.M. Abel (Jan 3)
- Stuk2021-L-253 - The Grain Growers Guide, P.M. Abel (Jan 21)