Vincent van Gogh was a prolific writer, it is estimated he wrote over 2,000 letters. Of these, a little over 800 survive. These letters give a glimpse into both the man and the painter. In letters, van Gogh was philosophical, poetic, sometimes even emotional. His letters offer glimpses into his daily life and his art. Van Gogh often described his work in his letters.
And they serve a record of his work after Paris. Vincent would often include rather detailed sketches for Theo to see. And they serve as a record of some of his materials. Inclusion in the letters of a work provides some serious provenance.
I did the following about 35 years ago. The arrangement of the mountain range is the same as Starry Night. Both were painted out of his cell window at Saint Remy in 1889. You can tell the month from the color of the wheat in the enclosed field.
I want to. I've seen it on YT. I'm dealing with some issues so no for now. I was fortunate enough to catch the last huge Van Gogh exhibit in NYC in 1987 though.