I have found the following sentence with the strange placement of
an indefinite article for me. As a non-native English speaker I quite wonder since it has been written by an English speaker indeed.
He was an in house counsel at The Cooperative League of the USA.
an placed before
in. Personally I would find that meanin otherwise.
Edit: Does it mean the same like this sentence? If so, why it's used
an instead of
He was a/the one in the house...