Dear Richard and fellow researchers,
Just a reminder that Christian Schmidt can get any German language Luftwaffe related book in print.
I too, get the Zenith Books catalog, but as noted in the catalog, they are now offering more titles online at
http://www.zenithpress.com
Then there is this bookseller who has an interesting mix of offerings:
http://www.specialtypress.com
And the little known Aberdeen, this link goes right to their Luftwaffe section. Give it a few minutes to load and scroll down, since book covers do not appear until a little further down from the top:
http://www.aberdeenbookstore.com/luftwaffe.htm
And for new and old titles, there's always
http://www.aeroplanebooks.com
Regards,
Ed