I would pinpoint 1958 as a special time in my career. I had for some years been working with the Classification Research Group in London, and in 1957 we had held a small but successful conference to which Jesse Shera, Gene Garfield and others had come from the USA. In 1958 I published my first book, Classification and Indexing in Science, and attended the International Conference on Scientific Information in Washington. This was my first visit to the USA - I flew in a US Army transport plane with, John O'Connor and Desmond Bernal. The experience of attending the conference, and of other visits I paid at that time, led to the writing of my second book, On Retrieval System Theory...