You can google for the pictures but here are the ones I know:
DWR = Double Wedding Ring
GFG = Grandmother's Flower Garden
D9P = Disappearing 9 Patch
OBW = One Block Wonder usually an equilateral triangle but can be anything like 1000 Pyramids, Apple Core, Clam Shell, Four Patch Posey, GFG, Tumbling Blocks, etc.
BA = Baltimore Album
SBS = Sylvia's Bridal Sampler or Sunbonnet Sue
DJ = Dear Jane
LC = Log Cabin
I'm sure there is a list of all these and more somewhere on the internet. Try googling Quilters Acronyms and see where that takes you. You'll be swimming in alphabet wonderland!