In the meantime, I just received today a copy of volume 1 of the Fischer Katalog Polskich Znakow Pocztowych recently released in Poland, covering the main stamp issues of the Interwar Era, the Socialist Republic period and the modern Polish state. Will hope to get volume 2 soon, which covers regionals such at Danzig and the German Plebiscites, the General Gouvernment issues from the Nazi Occupation, and other related material.
The new edition of Fischer's Poland Specialized Catalogue, volume 1.
I am also waiting for delivery from Italy the four-volume specialized catalogue of Ethiopian stamps and postal history up to 1974 published by Vaccari. They were on sale at Vaccari direct for about Euro 80, which for a four volume set is very cheap. Two volumes deal with the stamps, with the second volume dealing with Postal History post-Italian occupation, while a third volume covers the classical postal history from the mid-19th century to 1936, and a fourth volume of addendum and furhter notes and updates.
The two main volumes of Vaccari's Ethiopia Specialized Catalogue
So lots of material in the pipeline coming for later this summer here on my blog. Stay tuned!