[Letter] 1839 Jul-Aug, Alexandrofsk, [St. Petersburg, to] Richard Roberts, Sharp Roberts & Co, Manchester / A. Wilson, [Sends letter via Thomas Kinnell. Mentions 'brass reverberating furnace in use at Colpino ... Works for some years past', but is particularly disappointed with the key grooving machine recently received: 'if no sea had intervened I most certainly would have sent it back'. Wilson was an Engineer-General long in Russia. 2p. on 1 leaf. Found in inv. no. 1993-378 (MS 368/2). See also 1993-380 and 1993-381 (MS 1481/2 & /3)]