Conversation so far:
Who/what is Gef?
Price and his friend Richard Lambert went to the Isle of Man to investigate the alleged case of Gef the talking mongoose.
Are there any other interesting aspects about this article?
Price asked Reginald Pocock of the Natural History Museum to evaluate pawprints allegedly made by Gef.
What was the case the Gef?
the alleged case of Gef the talking mongoose.
What did they conclude?
Pocock could not match them to any known animal, though he conceded that one of them might have been "conceivably made by a dog".
Were there any other cases he worked on?
Price visited the Irvings and observed double walls of wooden panelling covering the interior rooms of the old stone farmhouse.
Was there something in the walls?
featured considerable interior air space between stone and wood walls that "makes the whole house one great speaking-tube, with walls like soundingboards.

Question: Were there any other cases?
Self-contained rewrite: Besides the double walls in the Irvings, were there any other cases Pocock worked on?