Czerny-Germer Selected Studies: Vols. 3 and 4 anyone?

[maxim3]

Some of you may be familiar with an 1888 publication known in English as (something like) "Carl Czerny's Studies, selected and arranged by Heinrich Germer." It's worth looking at because Czerny published well over 1,000 pieces, and who bothers learning more than a small fraction of Czerny nowadays?

So Germer chose what he thought to be the most valuable pieces for students, from beginner to advanced, and published them in 4 volumes. You can find Vol. 1 on IMSLP.org, and vols. 1 & 2 on archive.org.

But I can't find vols. 3 and 4 anywhere! Can anyone help?