Here is a beautifully aged front cover of an Appleton’s Standard System of Penmanship booklet that was published by the American Book Company in the late 1800’s.
The back cover of the booklet has some wonderful alphabet and handwriting details. I think these covers would work well for your vintage school projects. 
Click on images to enlarge.
Julie is a vintage enthusiast and a Photoshop addict who collects old books and new recipes.
Contact her at: theolddesignshop(at) gmail(dot)com
inspiration’s building – love to come to your website
Hello – do you have the entire booklet?
Hi Lynda,
I have a listing in my Etsy shop with 16 scanned pages from the book (including the front and back covers): https://www.etsy.com/ca/listing/580624296/penmanship-handwriting-practice-vintage
Julie
Thanks, Julie – Just purchased, love the pages!
You’re welcome, Lynda. And thank you. 😊