Hi Rupert,

> On 07/03/2020 7:01 AM Rupert Boleyn <xxxxxx@gmail.com> wrote:
>
>
> On 03Jul2020 1453, Evyn Gutierrez wrote:
> >
> > While I lay here tonight I am going to find where jump governors were
> > introduced.
> >
> Hugh Guard 1e, perhaps?

You nailed HG 1e p. 32

Tom Rux