Except for use in image transfer, colloidal silver has little other use except in color photography as AH and yellow filter layers. It is not used in B&W photography outside of Polaroid type B&W transfers.
The chemistry is a bit exotic and the equipment required and steps required are complex. For example, to isolate this very fine silver "mud" as it was called, a centrifuge was used to wash the colloid. Filtration was impossible due to the fact that it clogged the filters. So, there are a whole host of things that are not disclosed in the early patents and writeups.
Kirks earlier references did not give specific formulas, and the references above do not work.