Diodorus Bibliotheca Historica 4.59.5:
And near Eleusis he slew Cercyon, who wrestled with those who passed by and killed whomever he could defeat. After this he put to death Procrustes, as he was called, who dwelt in what was known as Corydallus in Attica; this man compelled the travellers who passed by to lie down upon a bed, and if any were too long for the bed he cut off the parts of their body which protruded, while in the case of such as were too short for it he stretched (prokrouein) their legs, this being the reason why he was given the name Procrustes (original Greek).
Ovid Metamorphoses 7.438:
And fierce Procrustes, matched with you beside the rapid river, met his death; And even Cercyon, in Eleusis lost his wicked life—inferior to your might (original Latin).
Ovid Ibis 409:
As Sinis and Sciron and Polypemon with his son (original Latin).
Hyginus Fabula 38:
He slew Corynetes, son of Neptune, by force of arms.
He killed Pityocamptes, who forced travellers to help him bend a pine tree to the ground. When they had taken hold of it with him, he let it rebound suddenly with force. Thus they were dashed violently to the ground and died.
He killed Procrustes, son of Neptune. When a guest came to visit him, if he was rather tall, he brought a shorter bed, and cut off the rest of his body; if rather short, he gave him a longer bed, and by hanging anvils to him stretched him to match the length of the bed.
Sciron used to sit near the sea at a certain point, and compel those who passed by to wash his feet; then he kicked them into the sea. Theseus cast him into the sea by a similar death, and from this the rocks are called those of Sciron.
He killed by force of arms Cercyon, son of Vulcan.
He killed the boar which was at Cremyon.
He killed the bull at Marathon, which Hercules had brought to Eurystheus from Crete.
He killed the Minotaur in the town of Cnossus (original Latin).
London, British Museum E36: Attic red-figure cup with Theseus and Prokroustes
C.H. Smith, Catalogue of the Greek and Etruscan Vases in the British Museum, vol. 3 (1896), pl. 2
Florence, Museo Archeologico 91456: Attic red-figure cup with Theseus and Prokroustes
Paris Louvre, G104: Attic red-figure cup by Onesimos with Theseus and Prokroustes
A. Furtwaengler and K. Reichhold, Griechische Vasenmalerei: Auswahl hervorragender Vasenbilder (Serie III, 1932), pl. 141
Madrid, Museo Arqueologico Nacional 11265: Attic red-figure cup by Aison with Theseus and Prokroustes
G. Leroux, Vases grecs et italo-grecs du Musée Archéologique de Madrid (1912), pl. 27
G. Leroux, Vases grecs et italo-grecs du Musée Archéologique de Madrid (1912), pl. 26
Oxford, Ashmolean Museum 1937.983: Attic red-figure calyx krater by the Dinos Painter with Theseus and Prokroustes
J. D. Beazley, “Prometheus Fire-Lighter,” American Journal of Archaeology, vol. 43 (1939), 619 fig. 1 and pl. 10
Euripides Hippolytus 977:
For if I am to be bested by you when you have done this to me, Isthmian Sinis shall no longer attest that I killed him but say it was an idle boast, and the Skironian rocks near the sea (original Greek).
Edited by R. Ross Holloway, Elisha Benjamin Andrews Professor Emeritus, Joukowsky Institute for Archaeology and the Ancient World, Brown Univ., July 2016; and by Frances Van Keuren, Prof. Emerita, Lamar Dodd School of Art, Univ. of Georgia, November 2016.