Please can any one help with any information,l have 13 old glass photographs from around 1870s to 1880,on them its got newton & co, fleet st, london,and the other address of 37 covent garden london, now two of the photographs have this on them,taken from tissots origel paniting special permission lovue paris,which on doing my research one of the paintings is in the tate museum and the other one is in the broocklin museum,now on reading about tissot he was to have said that he was making any more photographs,did tissot ever get together with his friends,(whistler, dagar, monet/manet and other elite people)to make photographs,with them in them