Aside from its presence in libraries, I've only seen THE TEN COMMANDMENTS become available once in all my years...and I bought it!
THE TEN COMMANDMENTS (Piano Score Book) (1956) (16 Themes) (50 pages) (Famous) 01. The Bullrushes 02. Bithia's Bathing Float 03. Rameses Theme 04. Nefretiri's Theme 05. Moses - The Prince of Egypt 06. Joshua and Lilia 07. The Hebrews in Bondage 08. Court Dance 09. Moses Crosses The Desert 10. Jehtro's Daughter's Dance 11. Word of God 12. The Song of Joseph 13. Exodus 14. Bacchanal 15. Moses Reaches Mt. Nebo 16. Theme of God
Also, there was in individual sheet music for the love theme, later reissued in The Elmer Bernstein Collection.
THE TEN COMMANDMENTS (Theme from...) ("Love and Ambition") (1956) (Famous) THE TEN COMMANDMENTS ("Love and Ambition") (1956) (From: The Elmer Bernstein Collection) (Leonard)