Addendum III to Sander's list of orchid hybrids 1952-1954. - Sander, R. F.; Gilmour, John Scott Lennox, 1906-; Sander, D. F.; Sander, F. W.; Sander, N. E. H. (St. Albans : Royal Orchid Nurseries, 1954)
321-359, 424-491
As in the preceding addenda this contains two lists with different pagination/preface by Gilmour