At one point, Phineas and Mabel Hubbard have a conversation in front of Thiel Hall which was also used as the Hill Valley Courthouse from the Back to the Future movie series, another time traveling franchise. Nick Thiel was a producer and executive story consultant on the series.
This episode takes place in three different settings: Denison, Texas on October 14, 1890, Boston, Massachusetts in 1875 and Boston in March 7, 1876.
This is the shortest amount of time between assignments at only 15 years.