HP-48gx Calculus Card Manual or User Guide

[jeep]

Hello,

I am a long time HP calculator fan, and recent collector.
I recently bought an HP-48gx in excellent condition for a surprisingly good price.
I also bought a Calculus card for it, which I haven't yet gotten.

The problem is, I can't find any manual or user guide for it.
I just got my HP Museum DVD set, and I've spent several hours going through it, but can't find anything about it.

Here is a picture of the card, and if anyone can point me in the direction of a User Guide or manual, I'd be very grateful.

Thank you.