Agatha Christie short stories to be read

I've managed to identify the Agatha Christie short stories to be read to complete my challenge.

Yesterday I commented that I thought I had a few collections to check
But in fact things are not as bad as that and I think I have only 10 stories unread.

I now have on request from my local library
1950 Three Blind Mice and Other Stories (nine short stories - US only), containing

• The Third-Floor Flat
• The Adventure of Johnnie Waverley

and
1961 Double Sin and Other Stories (eight short stories - US only), containing

• Double Sin
• The Double Clue
• Wasps' Nest

and POIROT INVESTIGATES (US published) for

• The Chocolate Box
• The Lost Mine
• The Veiled Lady

and THE REGATTA MYSTERY for

• Problem at Sea
• How Does Your Garden Grow

That will make my final tally 153 stories, matching the list at Wikipedia