From 'blackcountryhistory.org/collections' http://blackcountryhistory.org/collections/search/advanced/
Search term (advanced search) tank+engine, p.21
BS-PS/10/3/387 - Tank 1225
BS-PS/10/3/388 - Tank 9619
BS-PS/10/3/389 - Tank 10050
BS-PS/10/3/390 - Tank 9686
BS-PS/10/3/392 - 'Unknown Tank'
P/9070 & P/1078 - Tank 119 'Old Bill'
P/9439 & DX894/8/2/50 - Tank 132 'Bilston Tank'
EPH/13 & EPH/14 - Smethwick Tank Week
WSMG 2000,0171 Walsall Tank Week
PHS/2758 'RNACS 20: MK2A Tank 'Whippet'
P-OC/7/1/4 - Faculty for removal of War Tank
There's probably plenty of other bits and pieces there useful to folks but if people have more information on the vehicle I suggest that the archives would probably be grateful for the assistance in improving the descriptions in their catalogue. http://blackcountryhistory.org/contact-us/