Access to the AMA online archive is for PROFESSIONAL USERS only.
AMA only entertains applications from those in the business of picture sales, picture research / editing etc.
Registering is a two step process. Firstly kindly fill in the account details here, then go to the contact us page and tell us who you are and what your requirements are. The more details that you provide, the quicker we can process your application. 
Account details

Your username should contain only letters, numbers and .+-_ characters.