Poetry Foundation: John Dryden
https://www.poetryfoundation.org/poets/john-dryden
Contains a biography and a collection of other works by Dryden.
Political Satire in Dryden's Alexander's Feast
https://www.jstor.org/stable/40754065?seq=1#metadata_info_tab_contents
A journal article that analyzes the ways in which Dryden may be satirizing the English monarchy in "Alexander's Feast."
BBC - History - British History in depth: The Glorious Revolution
http://www.bbc.co.uk/history/british/civil_war_revolution/glorious_revolution_01.shtml
An article on the Glorious Revolution (1688-1689), which may have provided the context for John Dryden's political satire in this poem.
Trojan War - Definition, Summary & Hero
https://www.history.com/topics/ancient-history/trojan-war
An article on the Trojan War, to which the poem alludes in its mention of "Helen of Troy."
Handel - Alexander's Feast (Power of Musick) Part I
The poem set to music by Baroque composer George Frederick Handel.