-bobk / Leon R (Bob) Koller: Concord, MA - 1977
-bobk / Leon R (Bob) Koller: Dotty and Jodi - 1972
-bobk / Leon R (Bob) Koller: Dotty - Early 2000s
-bobk / Leon R (Bob) Koller: Happy 60th Anniversary, Hon!
-bobk / Leon R (Bob) Koller: N6487J - Piper Cherokee 180D
-bobk / Leon R (Bob) Koller: BobK - about 2014
-bobk / Leon R (Bob) Koller: Sister Ruth - 1975
-bobk / Leon R (Bob) Koller: 1986 Ford Pickup
-bobk / Leon R (Bob) Koller: Dotty - 2020 - RIP
-bobk / Leon R (Bob) Koller: Dotty - 2019 - RIP
-bobk / Leon R (Bob) Koller: Dotty - 2019 - RIP