found: Work cat.: 93-50182: Inside Macintosh. PowerPC, 1994.
found: BYTE, Aug. 1993:p. 56 (PowerPC processors are based on IBM's existing POWER (Performance Optimized With Enhanced RISC) architecture)
found: Weiss, S. Power and PowerPC, 1994:p. viii (PowerPC microprocessors) p. 27 (PowerPC architecture was developed as a joint effort among IBM, Apple, and Motorola with the actual specification available in 1993)
found: BYTE, Apr. 1994:p. 44 (On March 14, Apple started shipments of Macs based on the PowerPC 601 ... IBM plans to release desktop and notebook computers based on the PowerPC 601 and PowerPC 603)
