However, there isn't a definitive individual with this exact name recognized widely in the field.
To help me understand your query better, could you provide some more information?
* What field is James T. McCay known for? (e.g., nutrition, medicine, science, etc.)
* What are you looking for information about? (e.g., his research, his biography, his accomplishments, etc.)
Once I have more context, I can help you find the information you need.