Now, just how many phone book collections are out there???

Hopefully there's another one out there, as we're missing LV books for some critical years, but....

1952--No Dudley

1955--All are Dudley

1966--No Dudley

Sorry I can't pin it down closer for you.

I'm not sure if it helps at all, but in 1963 Reno/Sparks/Carson City looks like they were pretty evenly split between 7 digit phone numbers, and 5 digits with the 2 letter prefix numbers.

On the other hand, Virginia City was waaaaay behind the times... as late as 1964, some of their phone numbers were still just 2 digits!!