Built in 1968 Cal 40 Hull number 138.  See much more on pinterest at https://www.pinterest.com/jimquanci/cal-40/

As of 2022, The Buffalo has done 7 trips between San Francisco and Hawaii as part of the Pacific Cup (5 times) and Singlehanded Transpac (twice). Three times with the whole family (spouse and two sons) and once doublehanded with spouse.

One of very few Cal 40s with a wheel, the Buffalo likes going downwind.  :-)