The problem:

https://en.wikisource.org/w/index.php?title=Chronological_Table_and_Index_of_the_Statutes/Chronological_Table/Hen3

is currently built using a semi-non standard method because the <pages /tag> did not handle the table elegantly.

What would be useful is if the <pages /> tag provided by ProofreadPage/ LST could be extended with a header and footer option, that would allow insertion of the header and footer code (either as template reference, or as a section of another page.) within the assembly model used by the <pages /> tas , I can then convert my code for the linked page to the more standard...:

<pages index="Chronological Table and Index of the Statutes.djvu" from=29 to=30 fromsection=Hen3 tosection=Hen3 header=Template:Statute_Table_header footer=Template:Statute_Table_footer />

Which is less error prone, and would be better supported by other parts of Mediawiki as implemented at Wikisource.