SG Commonwealth 1840-1970 edition 2020, George VI Murray Payne 20th edition, etc. 

Swaziland Philately to 1968 the Peter van der Molen handbook 2013 

Prephilately 2 books The Corsini Letters and Auction catalogue Christies (1988) Historical letters

Southern African Mails, Routes, Rates and Regulations 1806-1916 by Briam Trotter

Michel catalogues Europe 2018/2019 complete (including Germany) in 8 volumes in good condition

Michel catalogue Deutschland Spezial 2020 (band 1 and 2) 

Great Britain, Discovering King George V High Values Seahorses (reprint 2008) by Bryan Kearsley (Hampshire 2005), in perfect condition

including specialised Russian Empire 1845-1917 (2006), Michel Sudosteuropa 2019-2020, Yvert Monaco et des TOM 2019, OPB 2020 part 1 and 2 etc. 

Michel catalogue Europe 2020 issues 1-8  

Switzerland 13 books including Schweiz Abstempelungen (8 volumes) and Soldatenmarken-Angebot I and II (Jean Paul Bach)

approx. 30 books including Stamps of the Russian Empire used abroad (Tchilinghirian and Stephen 1957-1960), The Encyclopaedia of British Empire Postage Stamps Volume V (Robson Lowe 1973), Postmarks of the Russian Empire (Manfred Dobin 1993), specialized literature Hungary etc.

16 books, some French including Introductions à l'Histoire postale. Masterpieces of French Filatelie, Französische Armeepost and other as The Yucatan affair (forgeries from Rauol de Thuin)

Austria including Ferchenbauer Österreich 1850-1918 (6. Auflage), Müller Handbuch Entwertungen, ship post and literature Field post and APO's 1914-1918

France 12 books including Salles (Tomes I-IX)

België 16 boeken w.b. 8 voorfilatelie door Lucien P. Herlant

Germany 55 books including Bochmann (1936), Altdeutschland Spezial-Katalog Hans Grobe (5. Auflage), Peter Feuser etc.

various countries as England and Commonwealth, Italy, Switzerland (Schäfer, Der Briefpostverkehr Schweiz-Ausland 1459-1907) and topics as airmail, ship post, postal stationery (a.o. Asscher), war post, Olympics and scouting in 3 large boxes

United States books including Encyclopedia of the colors of United States postage stamps (4 volumes in 2 ring binders, by R.H. White),  The Private Local Posts of The United States vol.1 (by Donald Scott Patton), The Trevers Papers in 2 volumes in slip case (by James E. Lee) and Simpson's U.S. Postal Markings 1851-1861 and 2 books New Brunswick and Nova Scotia, in large box

Switzerland 26 books including Posttraktatenbücher der Postdirektion Zürich in 5 volumes (edition Consilium Philateliae Helveticae), Postvertäge-Taxen-Route (Schäfer) and Die Helvetische Republik (Grünewald), in 2 large boxes

Historical Journal of the British Campaign on the Continent in the year 1794 with the retreat through Holland in the year 1795, 1797 by Captain L.T. Jones, cover replaced and traces of use, rare book

prephilatelie, 12 books about rates, routes, cancellations van der Linden, forwarding agents and censor (Wolter Band 1 and Band 2)

Prefilatelia Espanola part I and II (Manuel Tizon 1971), Edifil 1982 and A postal history of Spain (Thea van Dam)

Middle East, 7 books including the postmarks and other markings of Mandate Jerusalem 1917-1948 and Egypt, stamps and Postal history by Peter A.S. Smith

Great Britain 12 books including British letter mail to overseas destinations 1840-1875 (by Jane and Michael Moubray) and A History of the ship letters of the British Isles (by Alan W. Robertson) and folders with copies about mails, packetletters and rates, many overseas including Channel Islands 

France 10 books and folders military mail many around 1795-1814