Norman Lewis who has done a number of books on word usage and vocabulary building along with a briefer briefing Twenty Days to Better Spelling has compiled an extensive dictionary. Along with the some 5000 words included, there are rules (i.e. under able, enable, indicating where the first e is retained) and these cover prefixes, word endings, hyphenation, syllabicating, pluralization, differences in meaning (i.e. under affect- the meaning and use of effect is also given). The problem speller who will have difficulty in looking up a word will find that it may be listed in its misspelled version and each word individually also indicates the likely tender trap.... A book which should serve as a corrective and a faithful reference aid and prove of particular value now when spelling is only infrequently taught in the formative years.