The letter forms are available online now. I only edited 1 scanned set as individual letters with transparent background. Put these in your working folder and place them into your indesign files (or make a title in photoshop, save it and place that instead)
The three original scan files are also there. They are layed out how they were in the scan, but are on a transparent background. If you want to use any of the letters I didn't make individual (for texture reasons etc) then either make an individual letter out of the one you want, or in inDesign place the psd and resize the appearance box around it so you only see the letters you want.
Hope that made sense, link for the folder is below :)