A Lovecraft letter to Duane W. Rimel, now for sale from L.W. Currey.
10 pages on both sides of 5 sheets, closely written and incorporating 7 pen and ink drawings of old Providence architecture, dated 29th March 1934, signed “Yours most sincerely — H.P. Lovecraft.
The description makes no mention of Letters to F. Lee Baldwin et al. There the text of the letter appears to be published complete, and it matches the Currey description. But the “7 pen and ink drawings” are not shown with the letter in the book. Nor are the drawings found with the letter as partially published in Selected Letters IV.
Three of the pictures can be seen in the above Currey listing picture.
If you check the book you will find that the letter was unavailable to Hippocampus Press and that the Arkham House Transcripts was used as source (p. 156). Note #3 on p. 162 indicates that HPL’s drawings were not copied for this letter in the AHT.