[r-t] Non-palindromic single-hunt Doubles methods

[Peter Hinton]

While searching for seasonally festive methods to ring, I have been looking at 
Nowell Place Doubles:
<http://ringing.org/main/pages/method?match=nowell&name-query=Search>

Melvyn Hiller's collection gives a Shipway Bob as the call, but I can't get a 
120.  Can anyone help, please?

The CC method collection gives a Ringing World reference of 66/167, which also 
covers Jack a Napes Bob Doubles; were these originally rung spliced?  My 
collection of Ringing Worlds doesn't go back that far.

Some of the other non-palindromic methods have been named in recent years by 
Paul Mason; I think most of these were rung in multi-extent blocks.  Was that 
how Nowell was rung?

But Hiller also gives variations of Nowell, like Snowdrop (using a Wallflower 
Single).  Again, I can't find any 120s, but presumably these must have been rung 
as 120s, due to Decision (E)A.3(c)?
"Each variation must by itself be capable of producing a true six-score"

Peter