1) Sherlock Holmes, and 2) The Two Great Detectives
Dick Giordano was not only a great Silver Age artist, but also worked many years as an editor for both Charlton and DC Comics. I loved his work on the Batman titles, with Neal Adams and on the DC 12-issue series "Crisis on the Infinite Earths".
The first piece I commissioned from Mr. Giordano through his website. The second piece I purchased on eBay. Upon emailing Mr. Giordano I found out this piece was originally done for another collector but was to be Batman chasing Dracula.