My most recent encounter with his work was this March at the S.R. Brennen Fine Arts gallery in Palm Desert, California (web site here). One Gottlieb painting caught my eye to the degree that I pulled a scrap of paper from my pocket and wrote a note to myself.
What struck me was that it was done in the spirit of a Sir Henry Raeburn portrait that I am familiar with. I do not know if Gottlieb was aware of that particular Raeburn work, so what I show below might be simple coincidence. And if Gottlieb did know the Raeburn painting, it was an excellent source of inspiration.
This is the Adrian Gottlieb painting I saw at Brennen's.
This painting can be found at the Huntington Library in San Marino, California. I wrote about it here.