| ID | Name | Type |
|---|---|---|
| #22169 | R. de Ville | + |
| #11857 | R. de Wit | + |
| #11858 | R. v. Decker's Verlag | ? |
| #11859 | R. van Vliet | + |
| #11860 | R.A. Penfold | ? |
| #11861 | R.A. Soft | Z |
| #11862 | R.A.M. | ? |
| #11864 | R.B. Coats | ? |
| #11865 | R.C. Fleming | + |
| #11866 | R.C. Laight | + |
| #11867 | R.C.D. | ? |
| #11868 | R.C.D. Enterprises | Z |
| #11869 | R.C.E. Macare | ? |
| #11870 | R.C.L. Software | Z |
| #11871 | R.D. Foord Software | Z |
| #11872 | R.D. Hartley | + |
| #11873 | R.D. Holland | + |
| #11874 | R.D. Johns | + |
| #11875 | R.D. Moss | + |
| #11876 | R.D. Nelson | + |