racing prints / pictures / memrobeila

ebay, I would think, or you can  P/M me with what you have and what you what for them.

The Ebay "Racing Memorabilia" section is pretty active with usually around 7/8k items on the UK site. Take a look and see what the stuff you have is making (remember to click the sold button to get the price realised - often what people are pricing at is ridiculous) If you have anything top end (say £500 plus) then Graham Budd is your man - he operates from Christies in London.  The BHA use him for their Racing Colours sales, but he does smaller stuff.