The William Wilgus finding aid is organized by giving us a brief overview of all the resource materials, summarizing his biography, and then outlining his works that have been divided into eight specific series. The finding aid describes Wilgus’ life as a civil engineer and the important project he worked on such as the Buffalo Union Station and the new Grand Central Terminal as a chief engineer of New York Central and Hudson River Railroad. It then mentions his life after opening up his own private practice and after that, his life devoted to research.

The division of his work into series is useful for researchers who are looking for specific documents relating to Wilgus’ works. For example, if a researcher was interested in Wilgus’ experience analyzing the French railroad for transportation in the U.S. during wartime, he or she would know to look in series II, “American Expeditionary Forces – Transportation Corps.” Also, if there is a specific document a researcher wants to see, the “detailed description” tab is available.