Click on link below for a powerpoint with active hyperlinks to research and historical information:
https://1drv.ms/p/c/f194e5ef3fa74eac/EfXw43tlQYRLpGd6P0z7rEwBfi-RZF2ZWg7-ECIrzuznlQ
Below is the same powerpoint presentation but as a movie. The links are not active.