A Simplified Derivation of Linear Least Square Smoothing and Prediction Theory [Bell Monograph] or "Linear least square smoothing and prediction theory" [wrapper title]
New York, N.Y. Bell Telephone Laboratories, Incorporated June 1950. Later printing. 9, [3-blank] pages. 10 7/8 x 8 3/8 inches (275 x 213 mm) Publisher's printed grey, blue and black wrappers. Stapled with five holes punched at the spine as issued. Near Fine. Wraps. 
The Proceedings of the Institute of Radio Engineers, Vol 38, pp. 417-425, April 1950 first published this paper, for which an offprint is known. Offered here in the Bell Telephone Systems Monograph series (#1732:June 1950), a later printing. The wrapper title is different than the paper's title, unusual given Bell Labs’ usual practice.
"Summary - the central results of the Wiener-Kolmogoroff smoothing and prediction theory for stationary time series are developed by a new method. The approach is motivated by physical considerations based on electric circuit theory and does not involve integral equations or the autocorrelation function. The cases treated are the "infinite lag" smoothing problem, the case of pure prediction (without noise), and the general smoothing prediction problem. Finally, the basic assumptions of the theory are discussed in order to clarify the question of when the theory will be appropriate, and to avoid possible misapplication."
PROVENANCE: The personal files of Claude E. Shannon (unmarked). There were multiple examples of this item in Shannon's files.
Sloane and Wyner, "Claude Elwood Shannon Collected Papers," #51
COLLECTORS NOTE: The Bell Telephone System Monograph series offered a way to obtain individual articles by Bell scientists regardless of where their work was first published. Many Monographs significantly postdate the original article publication. Because of this, they rarely constitute the coveted (and traditional) article offprint. If the journal of record issued no offprint, the Monograph might be the first separate publication - the closest the collector can come to a traditional offprint. We have done our best to place each Monograph properly in the article’s publishing history and welcome any corrections or additional information, especially regarding issues unknown to us.