CBC Previous Years
The results from previous years are given below. Most of the Summaries include information about environmental conditions as well as a listing of participants.
In addition to the annual summaries, some efforts have gone into consolidation of results over the years. The CBC 2000-2016 Summary file was an ongoing work that was updated on an annual basis. Marie Morgan took it upon herself to compile the results from the first count done in 1939 up through 2000. This major project was started in 2017, completed in April 2021, and has resulted in the CBC-history-1939-2020 files in 3 different formats.