[DOYLE, Arthur Conan (1859-1930), association]. MARTINEZ, Sergio (Mexican, b. 1938). Holmes at 221b Baker Street. [20th - 21st century]. Mixed media on paper. Image of Holmes examining a piece of paper, seated in front of his scientific apparatus in Baker Street. No signature visible. Sight 10 ? x 16". Matted and framed under plexiglass 16 ? x 21 ?". With an acetate overlay with editorial note affixed to mat. From the book, A Treasury of Literature. From the collection of noted Sherlockiana collector, Robert Hess.