I collect Spode Bowpot (gray) china, but it is challenging to build a collection when I don't know what pieces were made in the pattern! Might anyone be able to suggest where I could find a complete list?

I'm particularly interested in the full array of accessory pieces (primarily serving pieces, such as bowls and platters) that were manufactured, and would be happy even to find just a list of what Spode was selling in Gray Bowpot in any one year between 1945 and 1955.

The current company doesn't seem to have it, and I have so far been unsuccessful in finding such a list online. Any help or pointers would be greatly appreciated!