Ever noticed the spelling "Peterboro" and "Peterboro'" on old postcards and letters and such?
We reached out to local historian Elwood Jones at Trent Valley Archives, who tells PTBOCanada the spelling has offically been Peterborough since 1825, though there was some ambiguity after that. "Newspapers sometimes used the shorter spelling, particularly in the period from the 1880s to the 1910s. Also, the railways preferred the shorter form on timetables and the signs when approaching the city limits or railway station."