1. Noam Chomsky,Syntactic Structures, 'S-Gravenhage, Mouton and Co., 1957. (Janua Linguarum, IV) 116 pp.
2. The Robert B. Lees passage to which I refer is inRules for English Pro-Nominalization, IBM Research Center, 1960, p. 19, fn. 3
3. Charlton Laird,Thinking About Language, Rinehart English Pamphlets (New York, 1960). The quotation is on page 56.