CWS cigarette cards

This is one of a set of 28 cigarette cards issued by the CWS around 1914-16 on the theme of CWS buildings and works. The quality of the images is obviously not great, but the fact that they are in colour is really useful architecturally. The series didn’t have a proper title, and the individual cards weren’t numbered, but I gather a collectors’ handbook has given them numbers. I’ve seen 25 out of the 28 as follows: 1 Tralee, 2 Crumpsall, 3 Leicester, 4 Bristol, 5 Leeds, 6 Dudley, 8 Manchester HQ, 9 Luton, 10 Desborough, 12 Avonmouth, 13 Dunston (flour mill), 14 Silvertown (flour mill), 15 Manchester (Sun Mill), 16 Huthwaite, 18 Middleton, 20 Newcastle, 22 Longsight, 23 Dunston (soap works), 24 Irlam, 25 Silvertown (soap works), 26 London (tea), 27 Manchester (tobacco), 28 Bury. I also know that there are cards for Pelaw (see pic) and Keighley, but I don’t know their numbers. So if anyone knows what numbers 7, 11, 17, 19 and 21 are, it would be great to hear from you!