23 Dataplot: A system for on-line graphical display of statistical data
Describes the Dataplot Subsystem, designed to generate statistical graphs based on file data.
By WILLIAM A. WATSON

29 Electro-optic three dimensional displays
A new method for converting 2-D displays to 3-D is discussed, using uniaxial crystals to vary the optical path length between the 2-D display and the viewer.
By H. JOHN CAULFIELD

32 A high-precision display system for command and control
Technical considerations causing a shift in CRT display design from random beam positioning with analog symbol and vector generation to raster beam positioning with digital symbol and vector generation arc described.
By HERBERT C. HENDRICKSON

85 The Rand Tablet: A man-machine graphical communication device
Describes the stylus-tablet device developed by Rand which allows direct communication with computers.
By M. R. DAVIS and T. 0. ELLIS

91 New, security alarm telephone system provides total prison communications
The Security Alarm System used by the Maryland Department of Correction and the Chesapeake and Potomac Telephone Co. of Maryland is described.
By VERNON L. PEPERSACK

104 Single plane vacuum tube readout with ten guns, shaped beam and decimal input
Continuing a series of product-oriented technical articles, this paper discusses Industrial Electronic Engineers Inc., latest innovations in this area.
By DONALD GUMPERTZ

21 EDITORIAL: Jan Engel. program committee chairman, discusses the recent SID symposium

94 8th NATIONAL SYMPOSIUM: final report on the recent San Francisco meeting

96 CALL FOR PAPERS: for the May '68 symposium

97 SID ACTIVITIES: local and national news

99 READOUT: local and national news

106 NEW PRODUCTS: innovations from many firms

110 NEW LITERATURE: data available on items and ideas

112 ON THE MOVE: people - their appointments, promotions

114 CORRESPONDENCE: readers write to share their opinions

115 ADVERTISERS' INDEX: for finding them quickly