Byron Sweazy - Master Watchmaking Tools and Materials of the Trade Chicago School of Watchmaking | 1952 | ISBN: N/A | English | 58 pages | PDF | 38.17 MB
Thomas Sweazey, Byron Sweazy - Master Watchmaking Lesson 32 Part II Chicago School of Watchmaking | 1962 | ISBN: N/A | English | 13 pages | PDF | 4.69 MB