The Blandings Castle stories and novels:

1915    SOMETHING NEW (Something Fresh) 

1923    LEAVE IT TO PSMITH 

The following short stories are in the collection BLANDINGS CASTLE (AND ELSEWHERE)
1924    The Custody of the Pumpkin 
1926    Lord Emsworth Acts for the Best 
1927    Pig-Hoo-o-o-o-ey! 
1928    Company for Gertrude 
1928    Lord Emsworth and the Girl Friend 
1931    Go-Getter (Sales Resistance) 

1929    FISH PREFERRED (Summer Lightning) 

1933    HEAVY WEATHER 

In the collections LORD EMSWORTH AND OTHERS and THE CRIME WAVE AT BLANDINGS
1936    The Crime Wave at Blandings 

1939    UNCLE FRED IN THE SPRINGTIME 

1947    FULL MOON 

In the collection NOTHING SERIOUS:
1950    Birth of a Salesman 

1952    PIGS HAVE WINGS 

1961    SERVICE WITH A SMILE 

1965    THE BRINKMANSHIP OF GALAHAD THREEPWOOD (Galahad at Blandings) 

In the collection PLUM PIE:
1966    Sticky Wicket at Blandings (First Aid for Freddie) 
1966    Life with Freddie

1969    A PELICAN AT BLANDINGS (No Nudes Is Good Nudes) 

An unfinished novel, with outlines and notes for its completion:
1977    SUNSET AT BLANDINGS
Books are given in CAPITAL LETTERS. Alternate titles are in parentheses; the first-listed title is that of the first publication, whether English or American.

A "new" discovery: Lord Emsworth (or one of his predecessors in the title) was first mentioned in February 1910, in the short story "The Matrimonial Sweepstakes" (see the story data page for more details).