LaTeX: finding a script font a la Griffiths' QM and Electrodynamics

This may sound a bit neurotic, but after trying the calligra and frcursive packages, I feel I'm still missing out on a good, general-purpose script font for math. I'm looking for something like the script "r" on page 9 of Introduction to Electrodynamics and the script "S" and "s" on page 121 of Introduction to Quantum Mechanics. The aforementioned calligra and French cursive have uppercase letters that are too large and calligra's lowercase letters are unreadably small. Moreover, I don't find the uppercase "S" to look particularly S-like---the Griffiths font is far superior. Any ideas what he used or what a good alternative is? Thanks.

edit: I've also tried Zapf Chancery, but that's not script-y enough for my tastes.
Last edited:

The Physics Forums Way

We Value Quality
• Topics based on mainstream science
• Proper English grammar and spelling
We Value Civility
• Positive and compassionate attitudes
• Patience while debating
We Value Productivity
• Disciplined to remain on-topic
• Recognition of own weaknesses
• Solo and co-op problem solving