1912 – 2006
Thirty Days to Better English
1965
Word Power Made Easy
1949
30 Days to a More Powerful Vocabulary
1942
The comprehensive word guide
1958
How to read better and faster
1944
Better English
1956
Correct Spelling Made Easy
1963
How to get more out of your reading
1951
Rapid vocabulary builder
1980
How to speak better English
1948
New Rogets Thesaurus
1981
Instant Word Power
1981
The modern thesaurus of synonyms, formerly The comprehensive word guide
1958
Dictionary of correct spelling
1962
Word Power Easy
1968
The new Roget's Thesaurus of the English language in dictionary form
1961
Instant spelling power
1976
