Hello
@Richard Smallfield,
For the US up to 1994 (and a "10 years later" epilogue) Hillary Johnson's book "Osler's Web" is a major source.
One of the issues there was that researchers of the CDC, who found the idea that patients were really sick laughable, used the assigned funding from congress as a personal piggy bank for their own non-CFS research.
I recommend the whole book, but a Washington Post article about the CDC issue can be found
here.
Johnson's book also details how funding and grant proposals (and their rejection) went for researchers from other sources like the NIH.
(I'd swear that I've seen John Gow, a Scottish researcher, also quoted in Johnsons book about how after a certain point in the string of psychiatry claims that it was psychiatric, funds just dried up for him. If you or your friend read the book and come across it, please message me as it's been driving me nuts that I can't find it again.

)
In the UK something similar happened. The Medical Research Council (MRC) up to at least 1995 tried to pretend they were funding ME research while they were not, putting up a smokescreen when MP's or patients asked about what they were funding. They talked about doing "limited" research into it - when the exact amount was none- and presented non-ME research as "basic research" into it, which it wasn't. (They had been doing this last bit since at least 1988, when there seems to have been a slight panic within the MRC because HORIZON wanted to confirm if they were indeed funding nothing, and if not why - they were afraid HORIZON "would make a meal" of the answer.)
The only thing they had been funding for years, since halfway through the 80s, was Anthony David et al.'s project at the Institute of Psychiatry that was about general fatigue in GP clinics. This wasn't about ME, nor was it biomedical. (But it was used to wave around at questions as the CFS research they were doing.)
Despite being aware of biomedical issues (they had a report from the Behan's from 1987, and Cheneys 1993 testimony before the FD scientific advisory committee among their files) there was no funding for it.
At the MRC there's also the issue of who was on the Board. Somewhere in that period new MRC Board members were installed, and instead of that being public information, it got stuffed in the "Myalgic Encephalomyelitis (ME) Postviral Fatigue Syndrome (PFS)" file and redacted, exempt from FOI, until 2071.
This is not normal; It is not regular to hide board members or who is in fund-deciding committees. You can go to the MRC page today and see who serves on the Boards and I know that e.g. in the arts&culture, at least here in The Netherlands, it is normal that Board members are known. There's no big secret about it, and it is important for the sake of transparency to see who is in the committee that decides on funding. There is no need for the MRC to hide these names as personal information exempt from FOI (unless of course they want to hide something problematic, that would go against the public interest to know who was on the Board at the time), plus the fact that it was specifically put into the ME file indicates it has something to do with it directly.
If I had more time and health this would be something I would want to go after, to start a process to make this public. (Or start a social media campaign to demand it.)
MRC file download
here, which will be the same as what
@Dolphin posted above.