Photograph of a Southern Pacific advertisement for Crater Lake, [s.d.]. A drawing of two cowboys riding horses amongst hills and a lake can be seen at top. An etching of a man and woman seated at a table is visible at bottom left. A waiter wearing a suit can be seen from behind in front of the table, while mountains are visible through the window next to the table. A United States map with travel routes is visible at bottom. Photonegative sleeve reads, "S.P. Lord Thomas J. Logan. Printed".; Advertisement reads [part 1 of 2]: "Crater Lake -- Nature's mystery. See this and the whole Pacific Coast -- Low summer fares start May 15. -- In southern Oregon is one of the scenic wonders of the world. This is Crater Lake, blue as indigo, round as a saucer and six miles wide -- a deep lake occupying the cauldera or sunken pit of a smashed volcano. Ages ago the volcano, probably 15,000 feet high, held its flaming torch above the Pacific's shore. Then it grew cold, glaciers took form, and great rivers sprang away to cut the Klamath, Rogue, and Umpqua river valleys of today. At some date a cataclysm engulfed the upper half of this vast mountain. Seventeen cubic miles of stone sank inwards -- the mountain had swallowed itself. In time, rain and melting snow gave the pit a living lake."; Advertisement reads [part 2 of 2]: "In 1853 a party of prospectors were ranging over the Cascade Mountains in search of a lost mine. The mine was not to be found. But the horse of one rider stopped suddenly, his feet planted at a steep brink. A thousand feet below lay this round, weird, flashing lake of deepest blue. For years the magic lake remained almost inaccessible, although stories of its mystery and beauty spread around the world. But today it is readily reached from either the Siskiyou or the Cascade line of Southern Pacific's Shasta Route -- a most enjoyable stopover between Portland and San Francisco. Comfortable motor stages in the travel season, July 1 to September 20, connect with Southern Pacific at either Medford, Klamath Falls, or Chiloquin to bear the visitor through virgin forests to the Lake's high, craggy rim. Good accommodations are available at the lake. With its surrounding forests pinnacles and neighbor lakes, Crater Lake is now a national park and playground. -- See the whole Pacific Coast. Crater Lake is the only one of the playgrounds accessible by Southern Pacific, whose four great routes penetrate and explore the West. No other railroad offers such a choice of routes. You can go west one way, return another; stop over anywhere on roundtrip ticket. Mount Rainier, the Columbia River highway, Lake Tahoe, Yosemite, the Big Trees -- see and enjoy them all. Very low summer fares will be in effect May 15, return limit October 31. See any travel agent, or Southern Pacific representative. Write to E.W. Clapp, 310 S. Michigan Boulevard, Chicago, for these two free illustrated books: 'Crater Lake' and 'How Best to See the Pacific Coast'. -- Southern Pacific. Four Great Routes."