9 FEBRUARY 1974, Page 5

Researching G. and S.

Sir: Personal circumstances have prevented my uttering until now a gasp at your book critic Benny Green's assertion that when preparing my Gilbert and Sullivan and Their World I made no "factual amendments or critical amplifications of The Gilbert and Sullivan Book, written by me twentyone years ago and now out of print. In a forenote to my new book 1 state that "Further research has uncovered fresh facts, while others have been revised." This is abundantly true.

Leslie Baily 29 Saxon Way, Saffron Walden