The Chelsea Standard, 17 July 1924, page 1, column 5.

Pioneer Washtenaw Citizen claimed by death Thursday. Dr. R. S. Armstrong...Resident of Michigan for more than seventy-five years. In the person of Dr. Rolla Silas Armstrong, death early Thursday morning, July 10, 1924, claimed one of Washtenaw county's oldest and best known citizens at his summer home at Cavanaugh Lake. 

Dr. Armstrong was the son of David and Sarah (Treadway) Armstrong, and was born in West Haven, VT, July 24, 1844. He would have celebrated his eightieth birthday anniversary in two weeks. He came to Michigan with his parents in the fall of 1848. His parents settled on the farm owned by his paternal grandfather four miles north of the present site of Parma. In the winter of 1849 Dr. Armstrong's father went to Parma to succeed to a physician's practice there. The following summer he moved his log cabin, with his family, to Parma. 

Dr. Armstrong was a graduate of the University of Michigan, class of 1868, and a former resident of Ann Arbor, where he resided for about two years. He was united in marriage with Miss Eliza M. Goodell of Corunna Dec. 13, 1869.  Mrs. Armstrong died in 1918 and since then Dr. Armstrong has made his home with his daughter, Mrs. Ernest R. Dancer of Chelsea. Dr. Armstrong came to Chelsea after his graduation and entered the drug business with N. J. Noyues and George P. Glasier. After retiring from the partnership in the Glazier store, Dr. Armstrong engaged in the drug (store) business for himself and in the fall of 1898 he sold to Fenn & Vogel (and retired from active business). He was a member of Olive Lodge No. 156, F. & A.m. of Chelsea, of the Chelsea R.A.R. of Commandery No. 16, Knights Templar, Ann Arbor and the Mystic Shrine. Besides the daughter, Mrs. Dancer, Dr. Armstrong is survived by three sons, Ransom of Chelsea, Howard of Milwaukee, Wisc, and Arthur of Roy, Mo. The funeral was held from the home of Mr. & Mrs. E. R. Dancer, Saturday afternoon. Mrs. Dorothy Bacon Fletcher sang and Rev. E. L. Sutherland, pastor of the Chelsea Congregational Church, conducted the service. Burial at Oak Grove cemetery. The Masonic services were conducted at the grave. 

Those who attended the services from out-of-town were R. M. Heath of Wahosha, Wic (probably Wakosha, Wisconsin), Mr. & Mrs. A. E. Fletcher of Jackson, Mrs. C. J. Depew of Parelton, PA, Mr. & Mrs. Paul Taylor of Pontiac, Dr. & Mrs. J. H. Frost of Ann Arbor, MI and Mrs. Seymour Godfrey of Parma and a number of the members of the Cavanaugh Lake Association.