Even though federal projects may not be subject to state or local law, licensed professionals are still bound by their respective state licensing laws, which typically require sealing of ALL construction documents they prepare, federal or otherwise. The feds (including professionals who are direct government employees) may be exempt, but we aren’t.
I have on occasion used a separate page for each discipline requiring a seal, listing each professional of record along with a listing of the content for which each is responsible (listing them concisely, i.e., using document/section numbers, or ranges of numbers, instead of actual titles).
Documents prepared or furnished by governmental agencies or others (such as front-end documents, soil reports etc.) are listed as such in the Table of Contents (not necessarily on the “Title Page,”) and are explicitly excluded from those sealed, and those unsealed documents may be identified as either “separately bound” or “bound herein for the convenience of bidders.”
In most jurisdictions, it is misuse of the seal to apply it to documents prepared by others, without the specific authorization or permission of the responsible (licensed) preparer. I would think this applies to AIA 201, and to supplementary conditions prepared by the owner’s attorney – or, for that matter, the owner. If you don’t prepare them (or oversee their production), you can’t seal them.
Here in Texas, licensing regulations on seals are more specific for engineers than for architects (different boards, so of course they aren’t coordinated). Engineers are required to seal the “title page” of specifications, but the architectural regulations are more general; one may seal the cover, title page or the first page of the table of contents. So I have prepared seals pages as described above, labeling them as the “Title Page” explicitly (they of course also state the project name, etc., as well as listing the professionals-of-record and their respective responsibilities). I may use a single “title page” listing all the professionals-of-record along with the respective section numbers covered, but include it in multiple copies, each copy sealed by a different professional. Alternatatively, one such page might bear all the seals, as long as each professional’s responsibilities – and exclusions – are clearly differentiated.