If I'm not mistaken, Old Time String Band Songbook, noted above by Mick, is just a retitle of New Lost City Ramblers Songbook.

Old-Time Country Guitar
by Stephen Cicchetti and Fly Bredenberg [names are given in reverse order on the cover]
(c) 1976, Oak Publications, a division of Embassy Music Corporation
tablature only, no music, with lyrics for songs marked * (the others are instrumentals)

Amos Johnson Rag (Sam McGee), 56
Bibb County Grind (South Georgia Highballers), 20
*Boat's Up the River (Roscoe Holcomb), 34
*Brownskin Blues (Dick Justice), 24
Buck Dancer's Choice (Sam McGee), 46
*Careless Love (Jimmie Tarlton), 38
*Cocaine (Dick Justice), 22
*Dixie (Riley Puckett), 66
Drummer Boy (Sam McGee), 58
Franklin Blues (Sam McGee), 51
Fuller Blues (Sam McGee), 54
The Georgia Stomp (Andrew & Jim Baxter), 70
Jailhouse Rag (David Miller), 30
*Johnson City Blues (Clarence Greene), 27
Kentucky Moon Waltz (Lena Hughes), 42
*Left All Alone Again Blues (Hoke Rice), 73
Logan County Blues (Frank Hutchison), 38
*Railroad Blues (Sam McGee), 48
*They Are Wild Over Me (Wesley Long), 34
*White House Blues/Goodbye Booze (Roy Harvey), 62
*Worried Man Blues (Maybelle Carter), 18