September SO, 



My dear Deans : 



This letter will introduce Mr. Ivan 

 M. Johnston who, as you doubtless know, la to spend 

 the next year or two as an assistant at the Gray 

 Herbarium. Mr. Johnston has done some very fine 

 work in the Gulf of Lower California where I had 

 collected ten years before. I have been very much 

 pleased with his work and I believe that he has the 

 possibility of becoming a very fine botanist. Any- 

 thing that you can do for him will be very much ap- 

 preciated. 



Very sincerely, 



Mr. Walter Deana, 



29 Brewster Street, 



Cambridge, Massachusetts. 



