A table on page 41 speaks for itself, showing the total horse-power of boilers and furnaces fitted up with liquid fuel appliances.
1921 881,780 The last year of the brief post WWI boom.
1922 247,165 First year of recession
1926 165,000 Miner’s strike, General Strike
1927 350,792 Partial recovery
1928 313,334 First hints of coming depression.
The company had produced a Golden Jubilee celebration booklet in 1921. This 1929 publication harks back to that, and in effect says “We are still here, and despite all the problems, we have some notable achievements to report”. There may also have been a feeling that, if something were to be produced, then it ought to be of high quality, which might not be affordable in the future.
Beautifully designed and printed, this might also have been a boost to morale… The Jarrow March is not far in the future.