† Note on Bonus V- and R-band Photometry Obtained for 3C 279 from the MMT

On 2018 April 23 UTC, photometric measurements of 3C 279 in V and R bandpasses were obtained using SPOL at the 6.5-m MMT on Mt. Hopkins, Arizona. These data have been added to both the V and R photometry summary tables for Campaign 109.