Doc Savage was the hero of large number of pulp adventure books written in the 30s and 40s. There was also a not very good film in the 70s.
Farmer read over 100 of the adventures of Doc Savage and the created this biography. Doc Savage was both a man of action and a good scientist - so very similar to me, except that I am not really rich. Like a proper biography he counts the number of times that the various characters get knocked out. In the later stories he wonders whether all the fighting gave them brain damage. All the characters started rich, but all ended in relative poverty.
Farmer spends a lot of time trying to work out where Savage's base is. In the end he thought it was in the Empire State Building. Then there is a long discussion about secret elevators and if they were allowed under the safety rules.
Doc Savage has a college of crime where he cures criminals. As Farmer notes this was probably illegal, as it involved kidnapping and holding people illegally.