Description

Letter from Tony Spooner, Vice President, Location Technology, dated 12/11/1981 with product data; Letter to D.W. Haverson from M. Klein, dated 12/6/1985; Letter to M. Klein from D.W. Harverson, Managing Director, Protovale, dated 11/19/1985 with product data; Fishers Underwater Pulse Detectors product data; Fisher M-Scope product data; "Shallow Water Testing the Fisher 1280-X Aquanaut," by Carl Schmeizle, Western & Eastern Treasures, May 1985; "Deep Water Testing the Fisher 1280-X Aquanaut," by A.M. Van Fossen, Western & Eastern Treasures, May 1985; Tinker & Rasor Detectron Instruments product data; Oceonics Locktrack product data; Grice Ocean Engineering, Inc. Underwater Metal Detector "Stereo" Model SML-300 product data with handwritten notes; FEREX Marine Underwater Search Instrument product data; 3D Electronics Inc. Model 301 Cable-Pipe Locator/Tracer product data; Pipelok product data; AZA Scientific, Inc. Discoverer VI Fluxgate Magnetometers product data; Letter to M. Klein from John Gibson, Director of Marketing & Sales, Garratt Metal Detectors, dated 12/4/1985 with product data; Garratt Metal Detector catalogs; The Garrett Searcher Treasure Search and Electronic Recovery, Number 9, Fall 1985; Grand Master Issue The Garrett Searcher Treasure Search and Electronic Recovery; White's Electronics catalogs and product data; Discover, August 1977 & Jan.-Mar. 1979; "Shellfish: A New Pre-Surveyor and Pipe Line Locator," Pipe Line Industry, Mar. 1970; "Guide to Metal Detectors," by Jim Davis, Popular Science, June 1971; "An Underground Survey Meter and Metal Locator," by Harold Pallatz, Popular Electronics, Aug. 1971; "Pulse Induction Metal Detector," by J.A. Corbyn, Wireless World, Mar. 1980; Metal Detecting, vol. 2, no. 6, March 1980; Miscellaneous advertisements