Would those 2 yeasts have been used together at Ballantine? BRY 97 is such a slow starter, 96 would be the starter, 97 the finisher.
That's a good question. Thus far, the evidence points to BRY 97 being used at the large brewery site. That site also contained a maltings in addition to an ale brewery. Ballantine acquired the Schalk Brothers Brewery in 1879. Schalk Brothers became indebted to Ballantine because Ballantine produced malt in addition to beer. Schalk Brothers brewed lager "beer." It is believed that BRY 96 (a.k.a. "Chico") was used at the former Schalk brewery to produce Ballantine's "beer" offering, which explains the culture's good low temperature performance. If we search the ARS NRRL Collection for cultures deposited by Ballantine, we find the following accessions:
Y-7407 Saccharomyces cerevisiae Meyen ex E. C. Hansen (1883)
G.W. Lange, Ballentine, New Jersey
BR, Beer pitching yeast, Ballentine Brewery, New Jersey, USA
Y-7408 Saccharomyces cerevisiae Meyen ex E. C. Hansen (1883)
Lange, Ballentine, Newark, New Jersey
BR, Ale pitching yeast
Did you notice that the cultures are entered in the same order in the ARS NRRL Collection as they are in the Siebel collection? That's no coincidence.
BRY 96 = Y-7407
BRY 97 = Y-7408
It is well known that Sierra Nevada obtained "Chico" from Siebel as BRY 96. It is now assumed that Anchor obtained their ale yeast strain from Siebel as BRY 97 (i.e., BRY 97 = Anchor, not Pac Man).
With that said, if you repitch BRY 97, you will discover that it behaves like any other ale strain with respect to lag time. This difference in performance leads me to believe that BRY 97 does not take kindly to aerobic propagation and drying. I am curious to see if a really fresh pack of BRY 97 takes as long to start. However, my local home brewing supplier does not turn BRY 97 over fast enough for me to be able obtain a really fresh specimen, which is too bad because BRY 97 is a much a better ale strain than BRY 96 from a mouth feel and malt profile point of view. BRY 97 may be the first dry ale yeast strain to benefit from making a starter. That's how I plan to use the remaining package of BRY 97 that is in my brewing refrigerator.
One last thing, here's a photo of a large open fermentation vessel at the Ballantine ale brewery. That head looks more like BRY 97 than it does BRY 96.