What I find extraordinary Albert is that everybody else seems to have fought Fokker Triplanes during those three weeks with the exception of WAB. viz:
56 Squadron 'High in the Empty Blue' Alex Revell:
June 13 A & C Flights Copeland climbing to the aid of a lone SE5 fighting a number of Triplanes. A flight was heavily engaged with a formation of Fokker Triplanes over Le Sars.
May 28th Crowe (succeeded Mannock in the command of 85 squadron) Flying southwards along the Front Lines searching for his patrol, Crowe spotted several large formations of Fokker Triplanes and Pfalz D.111s.
19 Squadron Derek Palmer
5th June At 11 a.m. on an offensive patrol the Dolphins encountered seven enemy aircraft triplanes.
17th June The Dolphin formation had seen in the West a formation of 12 enemy aircraft, triplanes and Albatross scouts.
And so it goes on. Everybody else seems to be fighting Triplanes even though only 321 appeared to have been built except one person.
1 McCudden fought Triplanes
2 Mannock fought Triplanes
3
Ira Jones fought triplanes
It does seem to me passing strange that only one person never seemed to encounter them.
VBR
Peter S