Source: History of Montgomery County, Indiana. Indianapolis, IN: AW Bowen, 1913, p 1069.
Montgomery County is fortunate in having within her borders a large number of professional men of a high order, among whom consistently appears the name of John O. Rosebaum, one of the younger leaders of the bar, who maintains an office in the town of Waveland, in connection with his extensive business life, fire and accident insurance and in which part of the county he is a leader in political affairs. He is widely known throughout this section and is rapidly forging to the front, being a man of energy, strong mental, honorable impulses and a pleasant personality. He enjoys the good will and respect of all who know him and we predict a bright future in his special fields of endeavor. Mr. Rosebaum was born on June 2, 1874, in Boone County, Indiana, and he is a son of BF and Sarah E (Osborne) Rosebaum. The father was born March 9, 1835 in Ohio, in which state he grew to manhood and received his educational training, and from there he removed to Indiana after his marriage. The mother of our subject was also a native of Ohio her birth having occurred there Feb 6, 1842 and there she grew to womanhood and attended the common schools in her community. Her death occurred March 13, 1912 in Waveland, Indiana. BF Rosebaum is still living, making his home at Waveland, being now advanced in years. He devoted his active life to agricultural pursuits and stock raising and was successful beyond the average tiller of the soil. He has always been known as a man of great enterprise, neighborly, public spirited and scrupulous honesty. He is well known over the county. Eight children were born to BF and Sarah E. Rosebaum: Nora and Joseph, deceased; Hattie who married VE Heart is living in Chicago; William C. lives in Cleveland, Ohio; Albert, deceased; John O. of this review; Franklin L. is married and lives in Detroit, Michigan; Homer G. married and lives in Chicago. John O. Rosebaum grew to manhood on the home farm and there assisted with the general work. He received a good common school education, later spending 3 years in Wabash College, Crawfordsville, then, having determined upon a legal career he entered the Indiana Law School, from which he was graduate din 1898 having made an excellent record in that institution. He was admitted to the Montgomery county Bar in 1897, and on March 18, of that year he was united in marriage to Laila D. ACKER who was born Feb 21, 1878 in Parke County and from there removed to Montgomery County with her parents when a child, the family locating in the vicinity of Waveland where she grew to womanhood and received her education. She is a daughter of LE and Serena Vandiver Acker, a well known and highly respected family, who became well established here through their industry. Seven children have been born to Mr. and Mrs. Rosebaum: Dwight, Lois S, Ruth E, Edith L, Loren Lucille; John Franklin and Maxine Frances. John O. Rosebaum began life for himself by teaching school in his native county, which he followed for a period of three years with success but he had a natural bent for the law and abandoned the school room for Blackstone & Kent. He began the practice of his profession in Waveland and here he has remained to the present time, building up meanwhile a very satisfactory and constantly growing clientele, figuring prominently in the local courts and he has met with pronounced success. In connection with his large legal practice he does an excellent business in life, fire and accident insurance, representing a number of the best companies in the United States. He is kept very busy attending to his manifold duties. He has accumulated valuable property in Waveland, including a substantial, cozy house and an attractive rental property. Fraternally, Mr. Rosebaum is a 32nd degree Mason, belonging to the order at Indianapolis and he is prominent in the work of the same. He lead the honor of serving as Master for two years and is Past Master of Waveland Lodge 300. he is also past chancellor of Rathbone Lodge, Knights of Pythias, Keeper of Records and Seals of the Knights of Pythias; secretary of Waveland Lodge No. 3900; Free and Accepted Masons. Religiously, he is Republican, and has long been active in the ranks, being a power in local affairs of his party and doing much for its success. In 1906 he was a candidate for state senator. Mr. and Mrs. Rosebaum were in the well remembered fire of the Iroquois theater in Chicago in 1903 and were very lucky to escape uninjured.kbz
Source: Waveland Independent newspaper, Waveland, Montgomery County, Indiana April 26, 1918 John O. Rosebaum announces as a candidate for Representative from Montgomery County on the Republican ticket, subject to the decision of the voters of Montgomery at the May primaries.