The Macmillan Dictionary has given a good example, but remember what I said at the beginning of the thread:
'When we regard something as a subject, we use a capital letter to start it', which is a generalization made by simply observing the sentence She majored in History at Stanford.
It was because I doubted whether a small 'h' could be used that I started the thread. I have never said that Oxford Dictionary (of course it can be wrong) is always correct; neither have I said the example sentence in that dictionary is exclusively correct.
Anyway, thank you for providing a good example sentence; I will write it down in my notebook.