Morris Minor Owners Club

Evening all, when you look up the chassis numbers for the morris minors, Potteries / ESM give you all the chassis numbers and their production dates for the travellers, saloons and convertibles but I cannot find anywhere the chassis numbers and their production dates year by year for the Morris Minor vans and pickups and their Austin equivalents. Its purely an interest thing but does anyone know where I can find them please?
Regards
Richard