1989 Postal Censorship in Imperial Russia Catalog Volume II (David M. Skipton, Peter A. Michalove) (Image)

1989 Postal Censorship in Imperial Russia Catalog Volume I (David M. Skipton, Peter A. Michalove) (Image)

1898 Series 21 St. Petersburg Charity Advertising 7k Letter Sheet of Empress Maria, Mint (Image)

1849 10k Postal Stationery Stamped Envelope, Russian Empire, Russia (SC ?? #7, 3rd Issue, sent to Tiflis, MIRRORED Watermark, CV $700) (Image)

1849 10k Postal Stationery Stamped Envelope, Russian Empire, Russia (SC ?? #7, 3rd Issue, postmark Molodechno, MIRRORED Watermark, CV $700) (Image)

1860 (9 Jun) Russian Empire, government cover from Riga to Volmar with Wax seal of the provincial government (Image)

1860 (14 Jul) Russian Empire, government cover from Riga to Lemzal with Wax seal of the provincial government (Image)

1861 (22 Mar) Russian Empire, cover from Saint Petersburg to Bordeaux (France) with Tax Stempel Porto (Image)

1868 (2 Dec) Russian Empire cover from Odessa to Marseilles (France) via Paris (Image)

1874 (31 Sep) Russian Empire cover from Riga to Pernov with Wax Seal on back (Image)

1880 (15 Mar) Russian Empire cover from Wolmar to Lemza with Wax Seal on back (Image)

1886 (29 Nov) Russian Empire cover from Prekulninsk to Grobino (Image)

Russian Empire Pre adhesive cover from Livonian Spiritual Board to Riga (Dobin 2.07?, Rarity - 4) Wax Seal on back (Image)

1813 Russian Empire, government cover to Jacopstadt (Dobin 1.01, Rarity - 5) with Wax seal of the provincial government (Image)

1809 (12 Jun) Russian Empire Pre adhesive cover from Windau (Dobin 1.01, Rarity- 5) to Pernau (Image)

1835 Russian Empire Pre adhesive cover to Dorpat (Derpt) (Dobin 4.01a, Rarity - 4) with Wax Seal (Image)

1835 (18 Aug) Russian Empire Pre adhesive Registered redirected cover from Riga (Dobin 1.05, Rarity - 4) to Berlin via Leipzig with Wax seal (Image)

1839 (10 Nov) Russian Empire Pre adhesive cover from Riga (Dobin 1.28, Rarity - 1) with Wax seal of Livland provincial government (Image)

1841 (Nov) Russian Empire Pre adhesive cover from St.Petersburg (Dobin 1.13a, Rarity - 5) to Florence (Italy) via Austria (Image)

1845 (7 Jun) Russian Empire Pre adhesive cover from St.Petersburg (Dobin 2.01?, Rarity - 1) to Wolmar (Dobin 4.01, Rarity - 2) with Wax seal of the provincial government (Image)

1847 (12 Feb) Russian Empire Pre adhesive cover from Taganrog (Dobin 1.05, Rarity - 3) to Genova (Italy) (Image)

1858 (21 May) Russian Empire Pre adhesive cover from Riga (Dobin 1.27, Rarity - 1) to Wolmar (Dobin 1.07, Rarity - 2) with Wax seal (Image)

1863 (2 Apr) Russian Empire Telegram (Image)

1863 (29 Nov) Russian Empire cover from St.Petersburg to Riga with dotted cancellation (Image)

1864 (26 Oct) Russian Empire cover from Pirunaev to Mitava (Image)