Websites
Everything you ever wanted to know about William Carlos Williams and then some.
And then some more.
Images
Check out this shot of Williams and his fellow poet Ezra Pound. What buddies.
White flowers, just like in the poem.
Video
Apparently, American composer Milton Babbitt set this poem to music. Who knew? You can listen to the song on YouTube. Just make sure you click to 6:40 on the time signature, so you can skip the Brahms.
Audio
Audio recordings of Williams's works, including "The Widow's Lament," brought to you by the awesome folks at the Poetry Foundation.
Some audio from good ol' PBS, courtesy of Garrison Keillor.
Historical Documents
See the poem as it was originally published. You won't even need a time machine to travel back to 1922.
Books
Here it is, awesome readers, the 1921 book in which "The Widow's Lament in Springtime" first appeared.