Literature. 'Brevportot i Sverige 1786–1830' (Ivarsson), 'The Kristall Collection' (David Feldman auction catalogue), six catalogues/booklets incl. a few 'Militärpostal tidskrift' and local postal history. Also 'The Fathers of Philately' (RPSL) and some photo copies abnout Swedish perfins. Approx. 6 kg.
