Mike,
That's a very large area & I can't think of a single source.
For starters (up to but excluding squared circles & CDSs) my suggestions would be:-
MX Specials - Rockoff & Jackson, Encyclopedia of the Maltese Cross Cancellations
London numerals, see Parmenter at
https://www.gbps.org.uk/information/dow ... ations.phpEngland & Wales barred numerals, go via this link
https://www.gbps.org.uk/information/dow ... rkings.php and see the section on Barred Numeral Cancellations.
Scots numerals start date. If you have any of June or July 1844, suggest you contact Howard Hughes (our past President & current advertising manager) to exchange details