Letter from Southern Fern Growers, Inc. to D. W. Kempner thanking him for his fern order and letting him know it should arrive the same day the card will.

Receipt for Charges Collected from Consignee (Daniel W. Kempner) by Railway Express Agency Incorporated. The total charge was $1.46.

"The results obtained from an evaluation for gust and draft velocities of acceleration and airspeed-altitude records taken by NACA recording instruments installed in P-61c airplanes participating in thunderstorm flights 6, 7, and 8 of July 9, 1946, July 10, 1946, and July 11, 1946, respectively, are presented herein. These data are summarized in tables I and II. In accordance with a recent discussion with a member of the U.S. Weather Bureau staff, the tabulated results for the present flight include in addition to data of the type presented in reference 1, the initial heading of the airplane for each traverse, the pressure altitude at the start of each traverse in increments of 500 feet, and the gust gradient distance when it could be evaluated" (p. 1).