Robert Gray wrote:

>Dietrich Fischer-Dieskau recorded the cycle in studio no less than six
>times, with, variously, accompanists Klaus Billing, Gerald Moore (twice),
>Joerg Demus, Daniel Barenboim, Alfred Brendel, and Murray Perahia - in
>addition to numerous live recordings available.

Actually DFD's officially recorded Winterreise ten times of which you
mention seven, not six ;).  There is one more with Moore, one with Hertha
Klust and one with Hermann Reutter.

Philip (pedantic mode off)