Book excerpt: This is the second volume in a trilogy of books that look in depth at the history of David Brown tractors, and a remarkable record of a proud company during what is probably the greatest period of its history. Part Two focuses on the period during which the motto of this celebrated Yorkshire company was "Mechanising the world's farms." It was no idle boast, as this book explains - the company expanded its product line to embrace a host of different models, becoming a serious contender on the global market. The famous Cropmaster remained in production until 1953, but the exciting new developments that followed included the six-cylinder 50D, the innovative rowcrop 2D and a range of crawlers and industrial tractors. Diversifying still further, David Brown added the old-established firm of Harrison, McGregor & Guest, together with its range of Albion implements, to its portfolio in 1955. The early 1960s saw the arrival of the Implematic range before the era of red David Brown tractors came to an end in 1964. This highly illustrated book is the result of many years of meticulous research during which time the author has met and interviewed many of David Brown's key personnel including directors, engineers and sales people. Many of the illustrations are taken from David Brown's own archives and will not have been seen before.