These are commonly used on SH discussion groups:

ABBE -- The Adventure of the Abbey Grange
BERY -- The Adventure of the Beryl Coronet
BLAC -- The Adventure of Black Peter
BLAN -- The Adventure of the Blanched Soldier
BLUE -- The Adventure of the Blue Carbuncle
BOSC -- The Boscombe Valley Mystery
BRUC -- The Adventure of the Bruce-Partington Plans
CARD -- The Adventure of the Cardboard Box
CHAS -- The Adventure of Charles Augustus Milverton
COPP -- The Adventure of the Copper Beeches
CREE -- The Adventure of the Creeping Man
CROO -- The Adventure of the Crooked Man
DANC -- The Adventure of the Dancing Men
DEVI -- The Adventure of the Devil’s Foot
DYIN -- The Adventure of the Dying Detective
EMPT -- The Adventure of the Empty House
ENGR -- The Adventure of the Engineer’s Thumb
FINA -- The Final Problem
FIVE -- The Five Orange Pips
GLOR -- The Gloria Scott
GOLD -- The Adventure of the Golden Pince-nez
GREE -- The Greek Interpreter
HOUN -- The Hound of the Baskervilles
IDEN -- A Case of Identity
ILLU -- The Adventure of the Illustrious Client
LADY -- The Disappearance of Lady Frances Carfax
LAST -- His Last Bow
LION -- The Adventure of the Lion’s Mane
MAZA -- The Adventure of the Mazarin Stone
MISS -- The Adventure of the Missing Three-Quarter
MUSG -- The Musgrave Ritual
NAVA -- The Naval Treaty
NOBL -- The Adventure of the Noble Bachelor
NORW -- The Adventure of the Norwood Builder
PRIO -- The Adventure of the Priory School
REDC -- The Adventure of the Red Circle
REDH -- The Red-Headed League
REIG -- The Reigate Squires
RESI -- The Resident Patient
RETI -- The Adventure of the Retired Colourman
SCAN -- A Scandal in Bohemia
SECO -- The Adventure of the Second Stain
SHOS -- The Adventure of Shoscombe Old Place
SIGN -- The Sign of the Four
SILV -- Silver Blaze
SIXN -- The Adventure of the Six Napoleons
SOLI -- The Adventure of the Solitary Cyclist
SPEC -- The Adventure of the Speckled Band
STOC -- The Stockbroker’s Clerk
STUD -- A Study in Scarlet
SUSS -- The Adventure of the Sussex Vampire
THOR -- The Problem of Thor Bridge
3GAB -- The Adventure of the Three Gables
3GAR -- The Adventure of the Three Garridebs
3STU -- The Adventure of the Three Students
TWIS -- The Man with the Twisted Lip
VALL -- The Valley of Fear
VEIL -- The Adventure of the Veiled Lodger
WIST -- The Adventure of the Wisteria Lodge
YELL -- The Yellow Face