W. Ross Winterowd’s essay tree diagrams of Joan Didion and Lewis Thomas.

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This is how Winterowd breaks down Didion’s “Los Angeles Notebook.”

And this is how he breaks down Thomas’ “Late Night Thoughts on Listening to Mahler’s Ninth Symphony.”

This is from Winterowd’s “Rediscovering the Essay.” Journal of Advanced Composition. Volume 8, 1988: 146-157. Email me if you want a PDF, but there is an online copy here.