1891 MAIL USED IN RETFORD WITH INVITATION TO ATTEND A CONVERSAZIONE. Envelope used locally in Retford with 1d lilac cancelled RETFORD cds DE 21 91 with original invitation to attend "a Conversazione on Thursday, December 31st, 1891" where Tempest Anderson "will describe his visit to the Volcanoes and Geysers of Iceland, and exhibit by means of the Lime=light, the Photographs taken by him during the tour". (Ref 103397).