If you want a bit of variety, the GC also had medium cattle vans and ex-LDEC ones. I have a drawing of the latter (somewhere) but photos of either are like hen's teeth.

Thank you both.  I (think) the only drawing I have is for the large type- in Tatlow's book-  but then again I do have Dow's trilogy too with wagon drawings.  I can't recall if either the medium van or the LDECR type are in Volume 3.  The general plan is to ultimately have a rake of six or seven of these vans- but knowing me I'll add on some of the others too, if I can find the info.  

The medium van is very similar to the large, just shorter. The NRM York have a drawing for the LDEC van, which is where I got mine from. Wish I could lay my hands on it!

Drat, that's a shame.... just gone through my copy of Dow's volume 3 and the only cattle wagon drawing is for the large type.  I wonder if the BRMNA reference page would suggest a source for a drawing....