Here’s a list of wagons done by Doug Hewson in EIM. The three numbers at the beginning of each line are “Volume, Issue, and page #”.
8 10 298 Railway Building 5″ gauge Wagons
9 6 175 Railway Building 5″ gauge Wagons. LNER 12 ton Covered Van
9 12 367 Railway Building 5″ gauge Wagons. LMS 20 ton Goods Brake Van
10 12 366 Railway Building 5″ gauge BR All Steel 16 Ton Mineral Wagon
15 9 272 Railway Building an LNER 42 Ton Bogie Bolster ‘D’ Wagon in 5″ gauge
16 3 69 Railway Building an LNER 12 Ton Single Bolster Wagon in 5″ gauge
17 11 335 Railway LMS Plywood Vans
17 3 79 Railway Building a GWR ‘Mink’
18 11 335 Railway LNER 20 Ton Brake Van
The first one is a wood 12 ton mineral wagon. I believe there were some others in later issues but I don’t have them at my finger tips.
John