The Adventures of Red Head of the Red Sea

Collection of 7 stories, 5 of which are definitely about Paul Rocher.
The five known Rocher stories are:
A King Goes By
The Man Who Sold Beds
The Dhow That Sailed to Nowhere
The Three-Four Flash
Thirteen Men at the Opera
The two possible Rocher stories are:
The Black Mantle
The Woman with the Celluloid Doll