What has the author H Gordon Selfridge written?

There seems to be a misunderstanding. H. Gordon Selfridge was not an author. He was a retail pioneer and the founder of Selfridges department store in London.

He was known for his innovative ideas and marketing strategies, revolutionizing the shopping experience. While he might have written some business or marketing materials, he is not known for writing books or fiction.

Perhaps you are thinking of a different person? If you can provide more details about the author you are looking for, I might be able to help you further.