I found this article which is comprised of excerpts from the journal of an American director working at the Globe Theatre in London. I thought it was amusing and interesting. You might find it useful as an example of a professional artistic journal:
Title: A summer of directing dangerously
Author: Gerald Freedman
Abstract: Freedman is the first American director to stage a production at Shakespeare’s Globe Theatre. Excerpts from the journal Freedman kept during his time at the Globe are presented.
Publication Title: American Theatre Volume 18 Date: 12/2001
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