3. General Correspondence
- UPWC 188/09 Folder : Rid 1908-1910
- UPWC 188/10 Folder : Ri 1908-1910
- UPWC 188/11 Folder : Ro 1908-1910
- UPWC 188/12 Folder : Sul - Sy (+ A.J. Spalding Bros.) 1908-1910
- UPWC 189/01 Folder : Si 1908-1909
- UPWC 189/02 Folder : Sk - Sl 1909-1910
- UPWC 189/03 Folder : Smith 1905 ,1908-1910
- UPWC 189/04 Folder : So 1909-1910
- UPWC 189/05 Folder : Sp 1908-1910
- UPWC 189/06 Folder : Sta - Ste (+ Sorg and Sullivan) 1909-1910
- UPWC 189/07 Folder : Sti - Stu 1909-1910
- UPWC 189/08 Folder : Su - Sz 1909-1910
- UPWC 190/01 Folder : Sa 1908-1909
- UPWC 190/02 Folder : San - Say 1908-1909
- UPWC 190/03 Folder : Sca - Scu 1908-1909
- UPWC 190/04 Folder : Sch 1908-1909
- UPWC 190/05 Folder : Sha - Shu 1908-1909
- UPWC 190/06 Folder : Sch 1908-1909
- UPWC 191/01 Folder : Sch - Scu 1908-1909
- UPWC 191/02 Folder : Se - Sey 1908-1910
- UPWC 191/03 Folder : Sh (+ C.A. Sauter) 1908-1910
- UPWC 191/04 Folder : Si - Sl 1908-1910
- UPWC 191/05 Folder : Sm 1908-1909
- UPWC 191/06 Folder : So 1908-1909
- UPWC 191/07 Folder : Sp 1908-1909
- UPWC 191/08 Folder : Sta - Ste 1908-1909
- UPWC 191/09 Folder : Sti - Sto 1908-1909
- UPWC 191/10 Folder : Stu - Su 1908-1909
- UPWC 192/01 Folder : Ti - Tol 1908-1910
- UPWC 192/02 Folder : Tom - Ton 1908-1910
- UPWC 192/03#1 Folder : Tra - Tri 1909-1910
- UPWC 192/03#2 Folder : Tra - Tri 1908-1909
- UPWC 192/04 Folder : Tro - Tru 1908-1910
- UPWC 192/05 Folder : Tu - Ty 1908-1910
- UPWC 193/01 Folder : Ta - Tal 1908-1910
- UPWC 193/02 Folder : Tau - Tay 1908-1910
- UPWC 193/03 Folder : Te 1909-1910
- UPWC 193/04 Folder : Tha - Thi 1908-1910
- UPWC 193/05 Folder : Tho - Thu 1908-1910
- UPWC 193/06 Folder : Ti 1908-1910
- UPWC 193/07 Folder : Ul - Utt 1908-1910
- UPWC 193/08 Folder : Wee - Wes (+ John T. Walsh) 1909-1910
- UPWC 193/09 Folder : Wh - Wil (+ Benno Wehlte) 1908-1910
- UPWC 193/10 Folder : Wol - Wor (+ Witmark & Sons) 1909-1910
- UPWC 193/11 Folder : Wil - Wir 1908-1909
- UPWC 193/12 Folder : Wo - Wy 1908-1909
- UPWC 194/01 Folder : Val - Van 1908-1909
- UPWC 194/02 Folder : Vau - Ver 1908-1909
- UPWC 194/03 Folder : Vi 1908-1909
- UPWC 194/04 Folder : Vo 1908-1909
- UPWC 194/05 Folder : We - Wi 1910
- UPWC 194/06 Folder : Wi (+ H.B. White) 1909
- UPWC 194/07 Folder : We - Wr 1909-1910
- UPWC 194/08 Folder : Wa - Wal (+ Frank C. Walker, 1906) 1909
- UPWC 194/09 Folder : Wa - Wal 1908
- UPWC 194/10 Folder : War - Was 1908-1909
- UPWC 194/11 Folder : We - Wel 1908-1909
- UPWC 194/12 Folder : Was - Wat (+ Rev. B. Weber) 1908-1909
- UPWC 194/13 Folder : Wel - Wes 1908-1909
- UPWC 194/14 Folder : Wh - Wi 1909
- UPWC 194/15 Folder : Wen - Wes (+ Mrs. Martin Walter) 1908-1909
- UPWC 194/16 Folder : Wh - Wi 1908-1909
- UPWC 195/01 Folder : Wal (+ Yawman & Erbe) 1909-1910
- UPWC 195/02 Folder : Wal - Was 1909-1910
- UPWC 195/03 Folder : Wea - Wel (+ L.L. Waterman Co. 1909-1910
- UPWC 195/04 Folder : Van (+ Walsh, Valdes) 1909-1910
- UPWC 195/05 Folder : Ve - Vu 1909-1910
- UPWC 195/06 Folder : Wall - Walsh (Wagner) 1909-1910
- UPWC 195/07 Folder : Ya - Yo 1909-1910
- UPWC 195/08 Folder : Yt - Yu 1909-1910
- UPWC 195/09 Folder : Za (+ E. Yrisarri) 1908-1910
- UPWC 195/10 Folder : Ze - Zi 1909-1910
- UPWC 195/11 Folder : Zu 1909-1910
- UPWC 195/12 Folder : Zw (+ Zapata, G. Wyman) 1909-1910
- UPWC 196/01 Folder : Gar - Gav 1910
- UPWC 196/02 Folder : Gar - Gav 1908-1909
- UPWC 196/03 Folder : Gab - Gam 1910
- UPWC 196/04 Folder : Gab - Gam (+ Jose Gallart, 1901 & 1905) 1908-1910
- UPWC 196/05 Folder : Ger 1909-1910
- UPWC 196/06 Folder : Gen - Geo (+ James Gerenda) 1908-1910
- UPWC 196/07 Folder : [this folder number was skipped]
- UPWC 196/08 Folder : Gea - Gel 1908-1910
- UPWC 196/09 Folder : Gib - Gin 1910
- UPWC 196/10 Folder : Gib - Gin 1908-1909
- UPWC 196/11 Folder : Gib - Gin 1909-1910
- UPWC 196/12 Folder : Glo - Gly 1908-1910
- UPWC 197/01 Folder : Gl 1910
- UPWC 197/02 Folder : Gof - Gox 1908-1910
- UPWC 197/03 Folder : Gor 1908-1910
- UPWC 197/04 Folder : Gol - Goo 1909-1910
- UPWC 197/05#1 Folder : God - Goe 1909-1910
- UPWC 197/05#2 Folder : Gra (+ Allen Green) 1909-1910
- UPWC 197/06 Folder : Gre 1908-1910
- UPWC 197/07 Folder : Gro (+ E.F. Gruber) 1908-1909
- UPWC 197/08 Folder : Gri 1908-1910
- UPWC 197/09 Folder : Gu 1908-1910
- UPWC 198/01 Folder : Haa - Hal (+ Har, Has, Hat, Hay) 1908-1909
- UPWC 198/02 Folder : Ham 1908-1909
- UPWC 198/03 Folder : Han (+ Has) 1908-1909
- UPWC 198/04 Folder : Har 1908-1909