Traditional Ballad Index has expanded the biblio since Toadfrog posted it almost two years ago:

Flying Cloud, The [Laws K28]
DESCRIPTION: Singer Edward (Hollohan) abandons the cooper's trade to be a sailor. At length he falls in with Captain Moore, a brutal slaver. Moore later turns pirate. When his ship is finally taken, the remaining sailors are sentenced to death
AUTHOR: unknown
EARLIEST DATE: 1894
KEYWORDS: sailor slavery pirate execution gallows-confession
FOUND IN: US(MA,MW,NE,So) Canada(Mar,Newf)
REFERENCES (15 citations):
Laws K28, "The Flying Cloud"
Belden, pp. 128-131, "The Flying Cloud" (1 text, 1 tune)
Doerflinger, pp. 135-139, "The Flying Cloud" (2 texts, 2 tunes)
Greenleaf/Mansfield 173, "The Flying Cloud" (1 text, 1 tune)
Creighton/Senior, pp. 223-225, "The Flying Cloud" (1 text plus 1 fragment)
Rickaby 41, "The Flying Cloud" (1 text, 1 tune)
Leach, pp. 778-781, "The Flying Cloud" (1 text)
Friedman, p. 411, "The Flying Cloud" (1 text, 1 tune)
Warner 2, "The Flying Cloud" (1 text, 1 tune)
FSCatskills 115, "The 'Flying Cloud'" (1 text, 1 tune)
Fowke/MacMillan 9, "The Flying Cloud" (1 text, 1 tune)
Lomax-ABFS, pp. 504-507, "The Flying Cloud" (1 text, 1 tune)
Botkin-AmFolklr, pp. 845-847, "The Flying Cloud" (1 text, 1 tune)
Darling-NAS, pp. 98-100, "The Flying Cloud" (1 text)
DT 409, FLYCLOUD*
Roud #1802
RECORDINGS:
Warde Ford, "The Flying cloud" [fragment] (AFS 4202 B1, 1938; tr.; in AMMEM/Cowell)

Stephen