I found a second edition set on Abe books last year. They were not inexpensive.

On Fri, Jun 21, 2019 at 5:59 AM Joseph Stewart <joseph.stewart@gmail.com> wrote:

Still trying to track a set down. Any suggestions?
-joe

On Sat, Apr 27, 2019 at 3:35 PM Joseph Stewart <joseph.stewart@gmail.com> wrote:
For sale? Preferably cheap to ship to the US?