Hello LIstress
I do have a copy of a commented version of the late Bill McCombs' joint paper you refer to. However, I have not scanned it all in and do not have a complete copy of it in PDF format. I've scanned a subset of the report, i.e. pp 139-146 as that was all I needed at the time I used it. Amongst that work on my laptop I also have a copy of NACA-TN-1458 on the same topic, which you can retrieve from the NASA or Cranfield websites, you'll need to dig a little there to get it.
Essentially Bill's work was done before the advent of FEA joint analysis or home-grown spreadsheet joint solutions. You can solve the problem yourself, using Niu's fastener stiffness coefficients (or similar) by setting up the equilibrium equations at each fastener and then solving the set of equations using the Excel built-in Solver routine. This also works very well and saves the hassle of building an FE model each time.
Regards
Ed