Sanjit asked for:
<blockquote>
Is there a way to update the online form for such requests so that
the requester can indicate the name of their institution and the book
they are interested in (e.g. Lee & Seshia, Lee & Varaiya, etc.)?
</blockquote>

<p>How we create accounts was updated in March, 2015 so that request an account page for the <code>instructors</code> group requests the above information and saves it in the <code>users</code> database, <code>profiles</code> table.</p>

<p>To get a dump of the data, see <code>/home/www/php/util/instructors</code>:
<pre>
# Generate a tab separated file of non-null 'book' fields  
# Usage:                                                 
#   su - mysql 
#   mysql < /home/www/php/util/instructors 
select p.username, p.realname, p.affiliation, p.homepage, p.book, u.recentAccess
from user.profiles p, auth_2.auth a, auth_2.users u
where p.username = a.username AND p.username = u.username AND a.groupname =	'instructors';

</pre>