Peter Smith notes that "the correspondence is from the July 12th issue where a Mr Owen Thetford supplies further information. However it is the editors' comments about the credentials of the original writer that point to your father (RW Becker) being the author." The editor also noted that "Mr. R.W. Becker, late of Heston Aircraft, Ltd." Mr. Becker and family (wife and two young children - my sister and I) emigrated to Canada in early June of 1947. Paul R Becker July 26, 2010