The American national laboratories (for example Sandia National Labs) carry out a variety of research for the US Government which as it's funded by the government is made available to the public. There are lots of reports that are relevant to aerospace engineering.
Standards are the backbone for aerospace engineering - not least because of the amount of collaboration that goes on in the industry.
Searching for Books and eBooks
You can use Library Search to find almost anything that the library holds and it's an easy way to find books and eBooks: