Hi there, Eve. I am no expert in the history of chemotherapy but think I’m safe in saying that the chemotherapy wasn’t used until the 1940’s. One of the first drugs was (and still is) called methotrxate and it is conceivable that this might have been tried for AML notwithstanding that its main activity is another type of leukemia (ALL).
By the late 1950’s, and, I believe, 1957 in particular, the modern era of chemotherapy was starting. However, with the exception of childhood leukemias, testicular cancer, and certain cancers arising in pregant women, success was elusive (to say the least). Still, in desperation or hope, the early drugs might have been employed to treat AML.
The symptoms of AML tend to be those of anemia (profound fatigue, shortness of breath), lack of normal white blood cells (infections) and lack of blood platelets (bleeding). Additionally, there is often weight loss and general inanition.
The “symptoms” of the chemotherapy are familiar to all - nausea, vomiting, hair loss, etc. They also tend to (transiently) worsen the low white blood cell and platelet counts and might thus, paradoxically, cause more infection and bleeding.
Sometimes, I suppose, there may have been legitimate confusion between certain vitamin deficiencies and leukemia and perhaps that could justify the use of “ox blood”. The use of “heart stimulants” sounds like hocus pocus, or, more charitably, perhaps they were given to treat a complication of the AML such as edema (which could resemble the state of heart failure).
I hope this is of some help.