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86 #915 Union Trust Building, Detroit, Mich., May 4th, 1901. [[?]] Dear Mr. Thum:-- I have received the specimen sheets of your advertising material, and am much obliged for the same. They are all good, but I think the four-paged one, entitled, "Transmission of Infection of Flies", the best one of the lot. The cover is attractive, the cuts instructive, and the text very well prepared. I hope next year you will have something with which to catch mosquitoes. Yours very truly, Charles L Freer Hugo Thum, Esq., Care, O. & W. Thum Co., Grand Rapids, Mich.
Transcription Notes:
There is very faint hand-writing in the upper left.