Browse Items (1 total) Tags: Schaeffer & Parker Browse All Browse by Tag Search Items Sort by: Title Creator Date Added Guam Office Supply Advertisement for Guam Office Supply. Guam Office Supply is now selling Schaeffer & Parker pen sets, Royal Safari typewriters. Guam Office Supply is located in Agana and they’re open from 9:00 a.m. to 5:00 p.m. Tags: advertisement, Guam Office Supply, office supply, Royal Safari, Schaeffer & Parker Featured Item Estorian Tesnaella A CHamoru rendition of the folk tale, Cinderella.