[jmherbener]

Here is Steve Hanke’s paper on 20th century hyperinflations.

http://www.cato.org/sites/cato.org/files/pubs/pdf/workingpaper-8.pdf

Here are a few pieces analyzing the end of the German hyperinflation:

https://mises.org/library/90-years-ago-end-german-hyperinflation

https://mises.org/library/hyperinflation-germany-1914-1923

Take a look at Bresciani-Turroni’s book on the German Hyperinflation, chapter 9 on Monetary Reform. He shows that a new Rentenmark was introduced as a redemption claim for gold marks.

https://mises.org/sites/default/files/The%20Economics%20of%20Inflation%20A%20Study%20of%20Currency%20Depreciation%20in%20Post-War%20Germany_2.pdf

In Zimbabwe, foreign currencies have been used as the Zimbabwe dollar’s value vanished.

http://www.cato.org/zimbabwe

https://mises.org/library/multiple-currencies-and-gresham%E2%80%99s-law-zimbabwe