Amphora, Type A. A. Herakles and the Nemean Lion. Herakles at left grappling on ground with lion. Behind him Athena facing right. Behind the hindquarters of the lion is Iolaos. Inscriptions in the field beside the figures and one other at extreme left. Above palmette and lotus chain. B. Dionysos and Ariadne. In center, l. to r., Ariadne and Dionysos. To left a partially preserved dancing satyr (tip of tail preserved) and to right a dancing maenad. The legs of 2 children, perhaps Oinopion and Staphylus, hang from Ariadne's shoulders. Dionysos holds a grapevine and a kantharos. Inscriptions in field. Part of palmette and lotus chain preserved above. On A... (inscription), with room for probably four or five letters before the epsilon. Restored from many fragments, with parts in plaster. Recalls Exekias and the Lysippides Painter (Beazley). Exekias (Mommsen).
The Perseus Project. http://www.perseus.tufts.edu/hopper/artifactBrowser?object=Vase&field=Collection&value=University+Museum%2C+University+of+Pennsylvania.
Reusser, Christoph. "Exekias hat mich gemalt und getöpfert" : Ausstellung in der Archäologischen Sammlung der Universität Zürich, 9.11.2018 - 31.3.2019. Zurich: 2018. See: pp. 284-291, no. 17
White, Donald J., Keith R. DeVries, David G. Romano, Irene B. Romano, and Yelena Stolyarik. The Ancient Greek World:The Rodney S. Young Gallery. Philadelphia: University of Pennsylvania Museum of Archaeology and Anthropology, 1995. See: p. 3
Beazley, John D. Paralipomena: Additions to Attic Black-Figure Vase-Painters and Attic Red-Figure Vase-Painters (Second Edition). Oxford: Clarendon Press, 1971. See: p. 318
Clement, Paul A. "Geryon and Others in Los Angeles." Hesperia: the Journal of the American School of Classical Studies at Athens 24, no. 1. (1955): 1-24. See: p. 9, note 15
Beazley, John D. Attic Black-Figure: a sketch; Annual lecture on aspects of art, Henriette Hertz Trust of the British Academy. London: H. Milford, 1928. Page/Fig./Plate: 50 See: p. 31