. "Underground Revenue Service (URS) was where the proceeds from Dimwit Flathead's astronomical taxations were tabulated. Its building was the largest structure in the Great Underground Empire until the construction of the FrobozzCo Building. Barbazzo Fernap left there a zorkmid for the First Dungeon Master."@en . "Underground Revenue Service"@en . "Underground Revenue Service (URS) was where the proceeds from Dimwit Flathead's astronomical taxations were tabulated. Its building was the largest structure in the Great Underground Empire until the construction of the FrobozzCo Building. Barbazzo Fernap left there a zorkmid for the First Dungeon Master."@en .