2001 Gibbons Simplified stamps of the World A-Z
2006 Scott Specialized, USA Stamps and Covers
1938 Gibbons Simplified Stamp Catalogue
2008 Scott stamp catalogues A-Z
1995 British Stamp Exhibitions
2004 British Stamp Exhibitions [updated]
2010 British Stamp Exhibitions [Latest Edition]
1995 Michel West Europe A-Z
2006 Israel Carmel Stamp catalogue
2003/2007 Great Britain SG Concise
1990 Gibbons Middle East catalogue, Vol.4
2009 JNF-KKL Stamp Catalogue, Phillips.
2009 Modern British Postal Strike Mail
2009 Modern British Local Posts
2010 Hornadge Cinderella Price Lists 
2008 Labbe's Specialized Guide to Lundy Island
1982 Facit Scandinavia catalogue
2006 British Stamp Market Values [Stamp Magazine Publication]
1996 JNF-KKL Stamps Price List [Kaplove]
1980 Bale Specialized Palestine Mandate catalogue
1980 Livni's Israel Stamp Catalogue
2004-2011 MBPC Bookmark Journals. [Great Britain]
2010 KGV and the GPO. Stamps,Conflict and Creativity. [Muir]
Equally enjoyed, indeed more so, are the following:
Over 200 Stamp magazines [GSM;Stamp Magazine:Stamp and Coin Mart;Scott Stamp Monthly, Stamp Lover [NPS] and others] Includes a number of very old editions.
The equivalent of 8 shoeboxes of leaflets,Journals,New issue info,show journals, show programmes, Philatelic Newspapers and more.
1992-To date British Philatelic Bulletins
A 10 year run of Britains UPA auction catalogues.
They are all excellent reference material which will never be discarded [whilst I am alive anyway!]. Never a day goes by when at least 3/4 of the magazines/leaflets are not in my hands !
Londonbus1.....not much room for clothes !