Supplement 5 to Interurbans Newsletter No. 16 is made up of looseleaf black and white photos of the Pacific Electric's trolleys in the Western District (and 3 maps). The Supplement's pages were intended to be inserted into the original looseleaf edition (1957) of the "Lines of Pacific Electric Western District" and are paginated to reflect that booklet's pages. 60 pages plus covers. Three hole punched for insertion into binder.