The Niwot Community Association is proud to support the
Fifth Annual Slepicka Tractor Collection Show
Join us to view running tractors & stationary engines and hear equipment tales.
SATURDAY, JUNE 13, 2026
10:00am – 3:00pm
6675 N. 79th Street, Niwot
Why – you ask?
Preserving these items provides a great teaching opportunity. Farmers who used or use this equipment love to come in and share stories of their upbringing. Parents can show their children equipment that is no longer made and explain what it was used for. All the horse drawn equipment on display around the yard is from the local homesteads around the Niwot area.
Niwot was primarily made up of farms, farming was the way of life, we believe that preserving and honoring this way of life is important. We appreciate that you took the time today to honor Niwot’s heritage.
Today, we have 17 full size tractors, 12 Gibson tractors, 17 hit and miss engines, 12 small engines, various horse drawn equipment. The tractors are on display throughout the spring/summer in our front yard. At the beginning of September, they are moved out back and housed in our tractor sheds.
Boulder Colorado natives – Jerry & Marsha bought this property in 1989 (a vacant lot). They built the custom log home you see today. Boulder County required the lot be mowed – this resulted in the first tractor purchase – a 1946 John Deere B. Our second addition was a 1936 F-20 that Jerry bought during the auction of his Grandparents homestead in Ashland, NE. Marsha’s Dad added the 1927 Fordson F, a tractor he had on his homestead of Nauvoo, IL. More tractors were added over the years.
On display:
- 1946 John Deere B 1945 Purple Princess
- 1936 F-20 1936 Case CC
- 1945 Case SC 1939 John Deere H
- 1944 Allis Chalmers C 1941 Farmall A
- 1930 McCormick Dering 10-20 1927 Fordson F
- 1948 Farmall Cub 1952 Allis Chalmers WD
- 1936 John Deere GP Model A 1943 Farmall H
- 1944 John Deere LA 1920 Fordson F
- 1931 Case L Gibson Super D
- Gibson SD Gibson Seattle A (2)
- Gibson Longmont A (3) Gibson Longmont D (2)
- Gibson EF Gibson Super D2
- Gibson EWF 1 of 1 Rock Crusher
We are:
- Jerry & Marsha Slepicka
- Vanessa (Slepicka) & Trenton Bailey (Montana)
- Jessie & Jenna (Carlson) Slepicka (Montana)
- Brandon Slepicka & Mikaelah Stark (Johnstown, CO)