Sounds like you're doing some serious restoration work on your 1922 touring! Kudos for keeping the vintage spirit alive. When it comes to those leather brakes, you might want to consider getting some high-quality, pliable leather for the job. It's essential for good braking performance.
You can often find the right leather at specialty stores or online shops. Look for leather that's suitable for brake lining.
As for pre-made options with punched holes, that might save you some time and effort. Do some online searches or check out automotive restoration forums; fellow enthusiasts might have some great recommendations.
And if you're interested in delving deeper into the world of leather, you should definitely check out the
Von Baer blog. They've got some fantastic insights on all things leather-related.