The Latin Library
Theoi Loeb Translation (Showerman)
Odd: Perseus has a commentary on the Heroides, but not, seemingly, the actual text in either Latin or English.
Olympian Odes (Greek and English)Printable copy - if this link works for you, it opens an easily printable copy of Pindar's first Olympian.
English only - Diane Arnson Svarlien
See also this note about a Wallace Stevens' Penelope.