Keystone Type Foundry - Borders:

Borders: A Complete Assortment of useful and decorative Designs Shown Herein [&] Cuts, Ornaments, Initials. 4to,30.5, pp.36 & pp.60. Keystone Type Foundry, Philadelphia, Ninth and Spruce Streets [i.e. 1910 or later].
A very attractive book of art nouveau ornaments and borders, the electrotyped cuts (done mostly in red and black) being particularly outstanding. Decorative green paper wrappers, titled in black within a green cloth folder titled ‘Keystone Type Foundry Supply House’. A very good copy.
Nothing quite like this is listed in Annenberg.