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

Click here for DRG's

Click here for DOQQ's
3189A1 JANICE
3189A2 BROOKLYN
3189A3 ROCK HILL
3189A4 LUMBERTOWN
3189A5 BAXTERVILLE
3189A6 BAXTERVILLE SW
3189A7 SANDY HOOK
3189A8 DEXTER
3189B1 NEW AUGUSTA
3189B2 MCLAURIN
3189B3 DIXIE
3189B4 PURVIS
3189B5 BAXTERVILLE NE
3189B6 PINEBUR
3189B7 COLUMBIA SOUTH
3189B8 SANDY HOOK NW
3189C1 OVETT SE
3189C2 CARTERVILLE
3189C3 HATTIESBURG
3189C4 HATTIESBURG SW
3189C5 OLOH
3189C6 IMPROVE
3189C7 COLUMBIA NORTH
3189C8 MORGANTOWN
3189D1 OVETT
3189D2 BARRONTOWN
3189D3 EASTBUCHIE
3189D4 SANFORD
3189D5 SUMRALL
3189D6 BASSFIELD
3189D7 BUNKER HILL
3189D8 OAK VALE
3189E1 LANHAM
3189E2 ELLISVILLE
3189E3 MOSELLE
3189E4 SEMINARY
3189E5 WILLIAMSBURG
3189E6 LAKE MIKE CONNOR
3189E7 PRENTISS EAST
3189E8 PRENTISS WEST
3189F1 LAUREL EAST
3189F2 LAUREL WEST
3189F3 HEBRON
3189F4 HOT COFFEE
3189F5 COLLINS
3189F6 LONE STAR
3189F7 MOUNT CARMEL
3189F8 NEW HEBRON
3189G1 SANDERSVILLE
3189G2 MOSS
3189G3 SOSO
3189G4 TAYLORSVILLE
3189G5 MIZE
3189G6 MAGEE SOUTH
3189G7 MENDENHALL SE
3189G8 SHIVERS
3189H1 WALDRUP
3189H2 LAKE COMO
3189H3 BAY SPRINGS
3189H4 CENTER RIDGE
3189H5 COHAY
3189H6 MAGEE NORTH
3189H7 MENDENHALL EAST
3189H8 MENDENHALL WEST