As with most catalogs, the C body listings are not totally accurate. I see that they show '69-'73 sedan and wagon windshields for $300, but I'm dubious about them actually being available. Will be interesting if someone is able to get one. Would certainly be good news if you can.
No Formal glass at all;
When you click on Cordoba glass, I get an error;
There is a gap in Imperial for 67/68, not tragic, because I think Imperial used C body glass these years...missed opportunity I guess;
The pic for Imperial 69-73 is a Mercury Marquis convertible (I thought that was amusing).