[CROGHAN, John]. Rambles in the Mammoth Cave, During the Year 1844. Louisville: Morton & Griswold, 1845. Fold-out "Map of the Explored Parts of the Mammoth Cave of KY." Modern leather. Howes C-905; Jillson, Rare Kentucky Books, p.108; Sabin 17590. -- RANDOLPH, Helen. F. Mammoth Cave and the Cave Region of Kentucky. Louisville: Standard Printing Company, 1924. Folding map, illustrations, and advertisements including a full-page ad for "the New Brown Hotel / The South's Most Modern Hotel" which had just opened in 1923. Original publisher's blue cloth gilt. -- LOGAN, John A. Echoes from the Hills of the Mammoth Cave Country. Bowling Green, KY: Porter-Coombs Printing Company, 1930. Original publishers red cloth. -- Together, 3 works in 3 volumes, all FIRST EDITIONS, 12mo and 8vo, conditional generally very good.