Attributed quotes are either okay or the whole of academia is in breach!
In reality it is a questioning of balancing the rights of the author with the needs of researchers, i.e. fair use or dealing. In the US, use by reproduction in copies or phonorecords or by any other means specified by that section, for purposes such as criticism, comment, news reporting, teaching (including multiple copies for classroom use), scholarship, or research, is not an infringement of copyright.
For UK law, under Section 29(1) of the 1988 Act, fair dealing is a valid defence when dealing with copyright infringement for the purpose of non-commercial research or private study. The sniff test is whether the copying is for personal or commercial use.
So under both US and UK law I don't believe there should be an issue with reproducing limited amounts of attributed material for our research into uniforms etc.
However, this is Barry's site and he may wish to impose tighter controls. PMs being the safest option