Alabama abolished convict leasing in 1928. I found this old New York Times article on the topic.
https://en.wikipedia.org/wiki/Convict_leasing#cite_note-Perkinson2010-3
Wikipedia says that convict leasing provided Alabama with 73% of its state revenue in 1898. That's enormous! Yet 30 years later, Alabama ended convict leasing and did not go bankrupt. So what happened? I want to know the full story behind this, political and economic. In 1928? Who led the abolition movement?
Also if you have information on the convict leasing programs of pretty much anywhere please don't feel apprehensive to drop it here. Those programs may have something in relation to Alabama's program here.
Also if you're curious about the surface level information of convict leasing I would recommend that one watch the Knowing Better video on NeoSlavery. He sorta skims through convict leasing and gives some examples but doesn't go deep and down into the financial nitty gritty of it.