Printed report by William Galloway on the Skella mine and its geology, with statistics, a plan, a drawing of machinery, two photographs and a manuscript letter concerning the mine.

Printed report by William Galloway on the Schela (Skella) mine and its geology, with a plan; also included are a later printed report [undated] on the Schela mine and a typescript report on the anthracite deposit near Tirgo Jiu, Romania.