"Lesson of the Two Symbols" Published

I have published "Lesson of the Two Symbols" in the Poems in
Periodicals section of the Archive:
http://whitmanarchive.org/published/periodical/periodical_titles/per.00186

In addition to adding this new page, I updated the headnote about the
Subterranean to include a link to the poem as well as to insert a
missing quotation mark in the intro paragraph, following "spirit."

Thanks go to Wendy Katz for finding and sharing the image of the
Subterranean that allowed us to complete his work.

--Liz