William John Wilgus was a civil engineer involved in numerous railroad constructions during the turn of the century; his most notable project being his involvement in Grand Central Station. During his career, William Wilgus created records of his work throughout various projects where he held roles such as: supervisor, advisor, chief engineer, director, researcher, general, and chairmen. Together, along with other documents of his merits, these records form a collection that is now known as The William Wilgus Papers. A total of eight, The William Wilgus Papers are arranged as groupings (series) of records based on the specific project/period-of-work they are related to; making the content within each series self-explanatory. To clarify this, the series, starting from I to VII, consists of I. New York Central & Hudson River Railroad, II. American Expeditionary Forces – Transportation Corps, III. Private Consulting Practice, IV. Public Service Activities, V. American Society of Civil Engineers, VI. Writings, Research Notes, and Related Correspondence, VII. Artifacts and Oversize Material, and an eighth grouping called General Client Files. Furthermore, The NYPL (New York Public Library) Archives website also lists important names, subjects, occupations, and material types mentioned. You can find The William Wilgus Papers at the Stephen A. Schwarzian Building inside the Manuscripts and Archives Division.