Page:
Source:
p. 2, b. 31-52
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A (→GC,FE) has no 
before b in the 2nd half of the bar. However, the accidental is not necessary there because earlier b's in the R.H. part – with a before the first of them – are placed on the lower staff. EE and GE which put the entire R.H. part on the upper staff added the appropriate accidental (as in our transcriptions).
Compare the passage in the sources»
category imprint: Source & stylistic information
issues: EE revisions, GE revisions
notation: Pitch
Missing markers on sources:
A, GC, FE1, FE2, FE3, FEJ, FED, FES, EE1, GE1, GE2, GE3