Orion LT family (Linotype library) contains 2 fonts. They are available in OpenType, TrueType and PostScript (Type 1) formats for PC and Mac.
You can buy and download them online. Click on the font picture to buy the font.
Orion™ Roman - Fonts.com
Download Orion™ Roman, provided on Fonts.com from Linotype. Orion™ Roman is available in ... File Name(s) OrionLTPro-Roman.otf: Windows Menu Name(s) Orion LT Pro
http://www.fonts.com/findfonts/detail.htm?productid=56654
