This page seems to be broadly copied from the book Secretarial Practice and Company Law by Arun Kumar and Rachana Sharma (Atlantic Publishers & Distributors (P) Limited, 1998) # and specifically page 529.
It contains no other history or references that I can immediately see. The book seems to be written for a secretarial audience in India in the 1990's, and while interesting not otherwise pertinent to immediate to my historical questions.
The system of card indexing was propagated by a French Person called Abb’e Jean Rozier (1734-93). The index is prepared by allotting a separate card to each piece of information. The required information are written on the cards. All cards are of uniform size and are arranged in alphabetical, numerical or geographical order.
This source is questionable in it's sourcing and seems to mix several different methods and systems, so we'll need to treat it with a massive grain of salt.
It does Mention Abb'e Jean Rozier (1734-93) as a historical figure related to propagating a system of card indexing which is a new name to me and thus worth looking into.
Is Abb'e here a title? (potentially the French translation of the English abbot which is correctly abbé, so this may have had a typo.)
The dates of life given would indicate that this is not the balloonist/scientist Jean-François Pilâtre de Rozier. See: https://en.wikipedia.org/wiki/Jean-Fran%C3%A7ois_Pil%C3%A2tre_de_Rozier