From the Sept. 15, 2015 DeKalb County/Sycamore, Illinois, MidWeek "Looking Back."
"Although the word Woodstock is a part of the name of that railroad, Woodstock-Sycamore Interurban Railway, it does not extend to Woodstock (in McHenry County) according to a statement of T.E. Ryan, the manager, who recently interviewed the citizens of Woodstock, the line is not likely to extend to that city--at least for some time, and instead effort will be made to extend it to Harvard."
Evidently the people of Woodstock didn't want it. Interurbans were another way to get around back then, especially while automobiles were in their infancy and roads generally atrocious between towns.
Harvard is another town in McHenry County.