Trying to narrow down a timeframe for this set...
So it looks like Pacific Coast Biscuit produced the 72 card series D310, and 72 card series D311 in 1911 and then produced these soon afterward.
Since the Fred W Kelly card mentions him winning the 100 meter hurdles in the 1912 we know they came later.
The Pat Donovan card mentions his world record weight throw of 16. ft 9 in. I found online that he later increased this mark to 16 ft. 11.25 in. during Feb. of 1914.
http://query.nytimes.com/gst/abstrac...649C946596D6CF
Giving some wiggle room for out of date info making it on to the card I would say they were printed between late 1912 and early 1915.