This photo of the sun was taken on 1906 June 27 by society member Rev. Dr. Marsh. See Dr. Marsh's article Photographing the Sun and Moon with a 5-inch Refracting Telescope in the RASC Proceedings for 1905, p.108.
At the meeting of 1900 June 12, Mr. T. Lindsay presented this photo which was taken by Mr. D.E. Hadden's 8x10 camera. (Mr. Hadden of Alta, Iowa was an associate member of the society.) This photo was published in the Transactions for 1900, page 18.