Solution to the
Sherlock Holmes Stamp Mystery

The strip of five Sherlock Holmes stamps contains a mystery:
The name of the author, DOYLE, is hidden on the stamps, one letter on each.
(This information was printed in "Stamp Collector" when the stamps were first issued.)

Here are the locations:

D   "The Hound of the Baskervilles", bottom center, in white, just above the "M" of Holmes, below Baskerville's leg.
O   "The Final Problem", as Holmes's cuff-link.
Y   "The Greek Interpreter", in the space under the interpreter's knee.
L   "The Six Napoleons", on the cover of the book on the table.
E   "The Reigate Squire", on the spine of a book above Watson's right shoulder.

D

Hound
O

Final
Y

Greek
L

Napoleons
E

Reigate

(orange dots mark the locations - click on image to enlarge)
E D L Y O


Thanks to David E. Tompsett for telling me about this!