Editorial Note: This timeline was created for the Schenectady County Historical Society around 1920. The original compiler is unknown. We will add more information as we have time. Thanks to Ann Kidalowski and Ida Lapi for data entry help. The compiler's introduction follows:
The compiler is indebted to the vast files and records of Alonzo P. Walton, of No. 26 Front Street, for a large proportion of the material contained in the historical sections of this work, and this indebtedness is hereby gratefully acknowledged.
It may appear from a perusal of the following that undue heed has been given to the events transpiring in the decade beginning 1880, but the compiler feels that the fact that Schenectady experienced its greatest impetus through events transpiring during that decade, warrants him in giving more extended notice to these years than to any other. Schenectady was "born again" in the 1880s - it ceased to be "Old Dorp, the town with a fence around it and a ceiling overhead."