For over half a century - and during a few varied but affectionate heterosexual partnerships including two happy marriages and a number of less lasting but equally happy affairs - this reviewer has been looking out for a really good sex book.
Such book has to be 1) well and interestingly written using plain words for plain things 2) informative and set out in such a way as to make the information both accessible and, often, entertaining 3) clearly illustrated with proper colour pictures, rather than indistinct line drawings, of the many different mating postures that human beings can adopt 4) free from pretentious psycho babble and/or sentimentality.
This book meets all those requirements very satisfactorily and, although it is written by a man for men, women can be reassured by it; it is a kindly good-natured book. The writer takes some trouble to affirm that the proper object of making love actively to a woman is to please her and, in particular, there is fair warning that some women, when penetrated in some positions, can experience discomfort that it is their lovers' business to avoid inflicting.
Useful notes, referring to each of the many mating postures described, gives them 'star ratings' in regard to catering for individual needs and preferences.
This is a very good book - a truly moral book - and we have to hope that at least one of the author's ladies might write a companion volume from the feminine point of view. If she writes as well as Grub Smith then she could be a very interesting woman indeed.