The AGBI is a reference collection and isn't available for inter-library loan. Are you talking about borrowing the referenced source that mentions your Philip Gentleman? Typically these materials will be in reference departments. I plan research trips to Orange County, FL library that houses the ABGI and the Boston Transcript (microfiche). They also have a large collection of New England material. If you are interested in discussing research for your subject, my message board email is:
rivercityresearcher@gmail.com My name is Lauri Russell, an APG member and I do professional historical and genealogical research. I am located in Florida and work in several large genealogy libraries and archives doing research for clients.
(note: due to the Rootsweb recent issues I am unable to log on as me and my post will show Lindsey, my daughter instead).