This is from the copy of the original Stage Manager's report.
Sept 5, 1989 - Ernest Hall (Stage Manager)
Remarks…
On the Ghost's exit in Act 1 Sc.5 Mr. Day Lewis left the stage and told me that he could not continue the performance. An announcement was made and the audience invited to take an extra interval. The announcement only specified technical problems. After 32 minutes the performance resumed with Mr. Northam as Hamlet. Mr. Bedford played Osric and Mr. Nicholas a Switzer.
Mr. Northam coped brilliantly (not an exaggeration) and received an outstanding reception from the audience.
This is the entire report with Ernest Hall's signature. Have not seen this before in its entirety...just a portion without the signature.