Michael,
There are some surprising things out there, in voices I never thought to hear:
A possibly authentic recording of the good gray poet:
http://www.whitmanarchive.org/multimedia/
Something for the Tennyson lovers among us:
https://www.youtube.com/watch?v=MkqUq26z1CE
"Did not the poet sing it with such airs
That one believed he had a sword upstairs" :
https://www.youtube.com/watch?v=u2FT4_UUa4I
Best,
Bill