The typewritten script of a First World War pilot's diary with a large number of photographs was submitted to the publishers William Heinemann and published by them in 1933. Heinemann stated on the book's jacket that the diary contained no names, dates, or anything that could reveal the identity of the writer or the squadron in which he served. The publishers understood that the diarist was killed in action in 1918 and that it was in deference to the wishes of those who were close to him that his diary should be published.

So remarkable were the photographs that their veracity was...