- 1Irving-Pitt Manufacturing Company (New York)
I-P Post Binders : Catalog Nr. 50
New York: 1910; 16 Seiten; Illustrationen
Ordner <Schreibware>; Verkaufskatalog - 2Irving-Pitt Manufacturing Company (New York)
[loose leaf] I-P Ring Books : Catalog No. 20
New York (City): Irving-Pitt Mfg. Co. 1912; 31 Seiten; Illustrationen
Notizbuch; Ringmappe; Aktenordner; Verkaufskatalog