May I remind you that under the rules of the Interstate Commerce Commission institutions, such as the Carnegie Museum, in whole or in part supported by taxpayers, may be accorded by the railroads free transportation and that in granting the favor I ask you are not violating any rules or regulation of the Interstate Commerce Commission, as I know by past experience. I am writing in the same effect to the authorities of other lines over which the car must pass. Trusting you will pardon the length of this letter, which seems necessary to make the situation clear to you, I have the honor to be, Yours very sincerely, Director Emeritus in charge of Paleontology