Neighmond, as I suspected, you are looking at seven shape Stamps Baxter style shape notes. I've started writing something up & will try to finish it after work later today.

Dave, I was at the UK Sacred Harp convention a couple of years ago. The last year it was in Nottingham, when Richard DeLong taught the school. Were you there? Larry Gordon is still very active, mostly with the young people's activities under the Village Harmony name.
Go here tto see what he's up to. Or go here to hear a sample of what they are doing. I know a couple of teenagers who have gone to several summer camps & are now in the year group. Their parents consented on the condition that they could sing as well. Village Harmony's spring tour starts April 18th, and will include performances in New York, Ontario, and Vermont.

Last & certainly not least, I found this in my e-mail this morning:
The Sacred Harp Musical Heritage Associaton is pleased to announce that it will hold a camp for the purpose of teaching Sacred Harp singing and traditions. "Camp Fasola" will be held at Camp Lee near Anniston, Alabama. The camp will begin with check-in from 4:00-6:00 p.m. on Sunday, June 29th and will close at 10:00 a.m. on Thursday, July 3rd.

Camp Fasola will be open to both youth and adults. There will be
multiple daily sessions for instruction in singing Sacred Harp, as well as time for recreation, rest, and fellowship. Jeff Sheppard and David Ivey will serve as camp directors. Some details are still being worked out, and more information on the cost and activities of the camp, as well as registration forms, will be available soon.

(Please not that several regular singings are scheduled in the area on
July 4th, 5th, and 6th.)

Fianal notes from Burke:
This is 4 note (like the Amazing Grace example)
Send a PM to either TNDARLN or me for the contact information.
I have been to the singings that are held the July 4 weekend & I can assure you that they are some of the best I have ever been to.