Signal Communications Doctrine - USA Voorschrift, Field Manual, 100-11 Signal generators TS-155/UP and TS-155 A/UP - USA Voorschrift, Technical Manual, 11-2657 Sweep generator MI-18709-B - USA Voorschrift, Technical Manual, 11-1065 Signal communication / prepared under direction of the Chief Signal Officer - USA Basic Field Manual, FM 24-5 Signal Corps : General provisions - USA Voorschrift, Army Regulations, No. 105-5 Signal Generator Triplett Model 1632 - USA Voorschrift, Technical Manual, 11-328