Audios
Someone giving a slightly funny reading of the sonnet.
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No idea who this reader is, but it's worth a listen.
Images
Portrait of a young Donne
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Scroll down for a cool portrait of Donne as a young man. You can tell by his hat that he means business.
Historical Documents
Holy Sonnet 14 in the original English
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A version of the poem where the language hasn't been modernized.
Books
The Variorum Edition of the Poetry of John Donne
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Want lots of short, easily understood summaries of scholarly opinions on this poem, but you don't know where to find them? Look no further.
The Cambridge Companion to John Donne
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This book's got a bunch of interesting, helpful essays on the poet.
Websites
Everything you want to know about Donne
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A lot of helpful stuff here