Anthony Berkeley
Anthony Berkeley Cox is one of the lesser remembered writers of Britain's Golden Age of Detection, yet was oddly one of the leading members of the genre at the time. While not educated in the hallowed halls of Oxford or Cambridge, like many his contemporaries, he attended the secular University College London. After serving in the British army during WWI, Berkeley took to writing as a journalist for such magazines as Punch and The Humorist. Berkeley published under many pseudonyms, such as Francis Iles, Anthony Berkeley (he omitted the Cox) and A. Monmouth Platts. In fact many people might recognize his writing as Francis Iles more, because his book, Malice Aforethought, was made into a BBC Movie staring Richard Armitage, and when I say staring, it's really a minor role, but it is staring to me.
In his writing, Berkeley is most known for the creation of the novice sleuth Roger Sheringham, who appeared in Berkeley's first novel, The Layton Court Mystery, which he published anonymously. Berkeley's book The Poisoned Chocolate Case staring Sheringham, is considered a classic of this classic genre. While he continued writing for The Daily Telegraph, The Sunday Times and The Gaurdian until his death in 1971, it wasn't his writing that Berkeley is most famous for.
In 1930 he co-founded the legendary Detection Club with Agatha Christie, Dorothy L. Sayers, Baroness Orczy, G.K. Chesteron, and other established mystery writers. The club had regular meetings where the authors would discuss their projects and get help with the technical aspects of their books. The club is noted for the fact that they adhered to a code of "fair play." Meaning, in their writing, they were to give the reader a fair chance at guessing the guilty party. While the club still exists, the fair play rule has become even more lax... in fact their were several members of the original club who didn't adhere to the rule at the time. They published several anthologies and co-authored many books, which Berkeley contributed to. Because of Berkeley's involvement in the club he is considered a key figure in the development of crime fiction and a worthy inclusion in my Golden Summer.
The Red House Mystery by A.A. Milne
Hangsaman by Shirley Jackson
The Road Through the Wall by Shirley Jackson
Cold Steel by Kate Elliot
Not many people would think of the man who created Winnie-the-Pooh as a mystery writer during it's Golden Age... yet he was. Sensation as the inquest reporters would write! A.A. Milne went to a private school run by his father where one of his teachers just happened to be H.G. Wells. When he went up to Cambridge with his brother Kenneth, they collaborated on articles for a local student magazine. His writing soon came to the attention of Punch magazine, where he joined the staff in 1906. But then the war intervened. After illness made him leave his regiment, he ended up working with Military Intelligence. 
The Man in the Queue (Inspector Alan Grant Book 1) by Josephine Tey
The Long War by Terry Pratchett and Stephen Baxter
The Ocean at the End of the Lane by Neil Gaiman
Josephine Tey is one of the pseudonym's used by Scottish writer Elizabeth Mackintosh. While caring for her invalid father she took to writing. The name Josephine Tey comes from her mother's first name and her grandmother's surname. There is not much known about Tey, but that has just added to her mystique. Her most famous character is Inspector Alan Grant, whose solving of the murder of the Princes in the tower in The Daughter of Time led to a renewed interest in Richard III. In 1990 this book was chosen as the greatest mystery novel of all time. 
