I scanned and put up some Walter Jacobs music this weekend. Many of these are generally available, but these clear scans include the title sheets. The majority are in A notation.
Walter Jacobs publications are consistently high quality. Very few mistakes or typos, if any. The paper is very high quality and the color title sheets are vibrant. The arrangements tend to be good and banjoistic as well.
As banjo popularity was winding down, Jacobs was buying up plates from other publishers and repringing older pieces. Jacobs bought the Gatcomb catalog and transposed a good number of titles (even correcting mistakes). The Jacobs prints tend to be better quality and cleaner impressions. They had their act together on printing.
https://archive.org/details/@joel_hooks
Still more to come...