Your Pentagon Library Account number can be found on the back of your Pentagon Library card if you applied in person, or in the "Pentagon Library Account Registration" email for online requests.
If you don't have access to either your Pentagon Library card or registration email, you can request the library staff to email you your account number by filling out the following form online here.
Please note that the library staff will get back to you during regular business hours of Mon-Fri 0800-1600, through the official work email address you used when the account was created.
WHS| 1155 Defense Pentagon | Washington DC 20301-1155