If really care that much and cant fathom me jumping 38" how bout you do this, email the people at sparq, they were at penn relays 2 years ago when I was there and did their testing, I finished in the top 10.
My vert there was 35.9 and standing long jump 10'3, I forget my marks in the 30m and overhead throw, but I'm sure they could give you the results if you really want, and this was right after the 4x1. So if you cant fathom me sometime in my life jumping 2inches higher well, then I jump 35.9.
I still dont know what everyone is getting at short sprints, vertical and long jump are not 100% correlated, often there is a significant correlation, but nowhere near perfect.
For example, take two of my former teammates and myself like so
Teammate A - 100m - 11.5, Vertical - low 30 Long Jump - 23'1
Teammate B - 100m - 10.75 Vertical - low 30 Long Jump - 22'9
Myself - 100m 11.3 Vertical - mid-high 30 Long Jump 22'1
Roughly Strength Measurements
A - Best lower body, Worst upper body, best olympic lifts
B - Middle lower body, middle upper body, worst olympic lifts
Me - worst lower body, best upper body, middle olympic lifts
Strength was all pretty similiar they were not huge differentials.
However I had no fom in the long jump, both other jumpers had pretty decent form.
So as you can see its a combination of many factors that cause good performance in any event.
The only point I am making is calve work can help out at least in vertical and there is probably some carry over to the other areas as well, hell its not that taxing just do a couple sets while watching tv or something, its not like you have to plan your day around calves.