Locomotive test report, British Railways (London Midland Region) Test Report No. R.4
Locomotive test report, British Railways (London Midland Region) Test Report No. R.4, Class 5MT 4-6-0 No. 44862, performance and efficiency testing, comparison of performance of the same locomotive when fitted with a clean or a dirty boiler, Rugby, January 1951, 6 pages, 4 graphs. 7.874 x 13.3858 in. (NRM Technical Archive reference TEST/LMS/18)
