Todd,

Those references are quite old (1950's) and would have to be pulled out by hand, as Medline only goes to 1966. I have several references on correlating group A with ischemic heart disease, again circa 1960. I have these articles in my possession, and tried to OCR them, but my photostats are 15 years old and quite faded. We will be pulling them again this summer as part of another pass through the non-electronic literature. If you can find it, Marcus's review in the NEJM in 1969 is a good general overview of non-transfusion significance of blood type, but again I believe it is not electronically indexed.