The books from the image (by order of the publication in this collection):
The Labours of Hercules (same in PT)
Dead Man's Folly (translated as Poirot and the Macabre Game)
The Clocks (translated as Poirot and the 4 Clocks)
Curtain Poirot's Last Case (The Curtain Drops The Last Case of Poirot)
One, Two, Buckle my Shoe/ The Patriotic Murders (same in PT)
Problem at Pollensa Bay and other stories (translated as Poirot and Company and with an introduction, a list of titles in the collection, a list of original titles, and a list of characters with notes by Joel Lima)