There are three files to download per quad:
xxxxxx.sdw
xxxxxx.sid
xxxxxx.txt

Click here for DRG's

Click here for DOQQ's
3489A1 HOULKA
3489A2 ROBBS
3489A3 SAREPTA
3489A4 BANNER
3489A5 PINE VALLEY
3489A6 VELMA
3489A7 COKER LAKE
3489A8 OAKLAND
3489B1 SOUTHWEST PONTOTOC
3489B2 RANDOLPH
3489B3 TULA
3489B4 PARIS
3489B5 WATER VALLEY EAST
3489B6 WATER VALLEY WEST
3489B7 SHUFORD
3489B8 COURTLAND
3489C1 NORTHWEST PONTOTOC
3489C2 THAXTON
3489C3 DENMARK
3489C4 YOCONA
3489C5 OXFORD SOUTH
3489C6 SPLINTER
3489C7 SARDIS SE
3489C8 BATESVILLE
3489D1 NEW ALBANY WEST
3489D2 ETTA
3489D3 PUSKUS LAKE
3489D4 BAGLEY LAKE
3489D5 OXFORD NORTH
3489D6 COLES POINT
3489D7 SARDIS DAM
3489D8 SARDIS
3489E1 MYRTLE
3489E2 HICKORY FLAT
3489E3 BETHLEHEM
3489E4 MALONE
3489E5 LAWS HILL
3489E6 TYRO
3489E7 LOOXAHOMA
3489E8 SENATOBIA
3489F1 BLUE MOUNTAIN
3489F2 CHILLI CREEK
3489F3 POTTS CAMP
3489F4 WATERFORD
3489F5 MARIANNA
3489F6 WYATTE
3489F7 INDEPENDENCE
3489F8 COLDWATER
3489G1 WHITTEN TOWN
3489G2 ASHLAND
3489G3 HOLLY SPRINGS SE
3489G4 HOLLY SPRINGS
3489G5 RED BANKS
3489G6 BYHALIA
3489G7 LEWISBERG
3489G8 HERNANDO
3489H1 CAMP HILL
3489H2 CANAAN
3489H3 LAMAR
3489H4 SLAYDEN
3489H5 MOUNT PLEASANT
3489H6 BYHALIA NW
3489H7 OLIVE BRANCH
3489H8 PLEASANT HILL