Domine dirige nos.

Envelope with the coat of arms of the Corporation of the City of London that was used to send out an invitation (EPH+24:14) to a 'conversazione' at the Guildhall during the 7th International Congress of Hygiene and Demography in London in 1891 with a leaflet (EPH421:6) explaining and giving 'A description of the invitation card for the hygiene & demography conversazione' designed by Blades, East & Blades, 23 Abchurch Lane, London, E.C.