This memorandum is a systematic listing and description of the salient features of English phonology and morphology, accompanied by a listing of parallel features in nonstandard dialects that account for the difficulties the speakers of nonstandard speech experience in the acquisition of standard English. The dialects considered are English as spoken in Negro subcultures and the dialect associated with a Spanish (Mexican) substratum. The information concerning Negro speech is based on various linguistic publications cited in the memorandum. The description of interference associated with a Spanish substratum is primarily inferred from a comparison of English and Spanish structure. This memorandum will be useful in training teachers of standard English as a second dialect as well as to actual practitioners in that field. The authors welcome comments, criticism, and specific suggestions concerning the language problems of speakers of nonstandard dialects and the interference with the acquisition of standard speech. A revised version is to become part of a "Syllabus for the Training of Teachers of Standard English as a Second Dialect," a project carried out within the Teaching the Disadvantaged program of the Stanford Center for Research and Development in Teaching. (Author/DO)