University of Toronto (Canada)
University of Toronto: "Passionate Shepherd to His Love"
This site from the University of Toronto contains the original text of Marlows'e "The Passionate Shepherd to His Love" with in-text notes keyed to line numbers.
Bartleby
Bartleby.com: T. S. Eliot: Notes on the Blank Verse of Marlowe
This entry is based on "Notes on the Blank Verse of Christopher Marlowe" by T.S. Eliot (1888?1965), from The Sacred Wood: Essays on Poetry and Criticism (1922).