Remember "file 90L-6F" ?" "Ninety feet from the left wall and six feet up from the floor!" I certainly do: That's of course the place of Soapy Slick's receipt in McDuck's Warehouse #1. The source is "North of the Yukon" from Uncle Scrooge #59. Klaus I.b.d.H.d.I.d.s.k.a.I.h.n.m. (this is NOT quiz #4!)