Letter from Geoffrey Marr Vevers to Dr M Mazels enclosing tickets for admission to London Zoo and Whipsnade Zoo following his assistance in the chemical examination of the blood of a Giraffe
Letter from Marguerite McArthur to Joan Procter regarding a request for Procter bind books
Correspondence between Captain D B McGreggor and Geoffrey Marr Vevers regarding the offer of animals to the Zoological Society of London
Letters from Josiah McGregor to Philip Lutley Sclater regarding a Pilcomayo expedition
Correspondence between James McInnis and Geoffrey Marr Vevers regarding a request of small Limulus for the Zoological Society of London from the Marine Biological Laboratory in Massachusetts
Correspondence between Captain C McKenzie and George Soper Cansdale regarding two lion cubs sent to the Zoological Society of London from Nigeria. One was named The Emir of Katagum and the other McKenzie of Katagum
Letter from Robert McKim to Philip Lutley Sclater regarding his subscription to the Zoological Society of London
Letter from Robert McLachlan of The Entomological Society, to Philip Lutley Sclater regarding an elephant trunk that was suffering from caries