Materials for systems engineering are located within several areas of the Library of Congress classification, including:
T59.5 Automation
TJ170-179 Mechanics applied to machinery. Dynamics
TJ181-210 Mechanical movements
TJ210.2-211.47 Mechanical devices and figures. Automata. Ingenious mechanisms. Robots (General)
TJ227-240 Machine design and drawing
TJ241-254.7 Machine construction (General)
TK7800-8360 Electronics
TK7885-7895 Computer engineering. Computer hardware
TK9900-9971 Electricity for amateurs. Amateur constructors' manuals
For a full listing of the call number ranges including a detailed breakdown of the call numbers for engineering, see the Library of Congress Classification Outline.