Here's one of eight covers (that I know of) that Tom did for Crippen & Landru. This book was published in 2006.
This painting was used for three different Battered Silicon Dispatch Box books, all published in 2011: Victorian Holmes by Michael Duke, Introducing Sherlock Holmes by William Hyder and Thinking Outside the Tin-Dispatch Box by William R. Cochran.
And here's one from Tom's own Black Dog Books, published in 2010. More great covers next Sunday!