Hippias Major or Greater Hippias (Greek: Ἱππίας μείζων) is a dialogue by Plato on the subject of beauty. Socrates' chief interlocutor is the sophist Hippias of Elis, who also features in the Hippias Minor.
Free Online Texts
Gutenberg: Ιππίας, Μείζων και Ελάσσων. Greek text, multiple formats.
Wikisource: Greater Hippias, translated by Benjamin Jowett. Multiple formats.
Internet Encyclopedia of Philosophy: Hippias - short biography of the historical sophist.
Librivox: Apocrypha of Plato - audiobook.
Philpapers: Hippias Major - open access papers.
Stanford Encyclopedia of Philosophy: Plato's Shorter Ethical Works, by Paul Woodruff.
Wikipedia: Hippias Major.
The Great Conversation: Further reading at Tom's Learning Notes
Plato: Hippias Minor.
Ancient Greek resources: learn to read Greek classics in the original.
Bloom's Western Canon: Plato's Dialogues are listed.