Literature. Handbooks, etc. 'SFF:s Handbok Del I–III' (SFF, 1962–1964) (with some notes), incl. the reprints of the Coat-of-Arms stamps, 'Tjänstefrimärken' (SFF, 1991), 'Oscarsperiodens frimärken' (SFF, 1985), 'Avarter hos de äldre bandmärkena' (SFF, 1966) and 'Stämplar för Postkontoren Luleå' (NFF). All are used. The entire lot is presented at www.philea.se. (5).