Re: ferc is a nice one.
Not really sure what's in there but there's a bunch of documents with this in the footer :
<center>You don't have permission to access this document.<BR>This document (eLibrary accession no.<font color=red> THERE WAS A NUMBER HERE</font>) is Critical Energy Infrastructure Information (CEII). <BR> The public may file a CEII request under 18 C.F.R. 388.113. <!--The public also may file a FOIA request under 18 C.F.R. 388.108--></center>
<!--<center>You don't have permission to access this document over the Internet. <BR> This document (eLibrary accession no. <font color=red> THERE WAS A NUMBER HERE</font>) is Non-Internet Public (NIP). <BR> Public access to this document is available through the <A href="mailto:email@example.com">firstname.lastname@example.org</A>).</center>-->