collection attracted visitors who were tourists, summer residents and visiting naturalists, including John Muir, Henry Fairfield Osborn, and ornithologist Joseph Mailliard. Grinnell returned to Pasadena in the fall of 1897 where he continued field work in the nearby mountains and canyons. Second Alaska trip Grinnell's second visit to the far north began in 1898 on the schooner Penelope. He spent 18 months in Alaska during the Klondike Gold Rush. Grinnell corresponded regularly with his family, the letters were later compiled and edited into the book Gold Hunting in Alaska, published by David C. Cook Publishing Company in 1901. Grinnell joined the Long Beach and Alaska Mining and Trading Company to Kotzebue Sound, Alaska. The company landed at Cape Blossom in Kotzebue Sound in July 1898. Grinnell collected and observed the summer migrant bird life; Gambel's sparrow, barn swallow, and Savannah sparrow, among others. By August, Grinnell had 75 bird specimens preserved, including a Siberian yellow wagtail. The miners spent the winter inland on the Kowak River [Kobuk River], then returned to the coast that spring. The company sailed on the Penelope to Cape Nome in July 1899. At Cape Nome, Grinnell's job was amalgamating the gold using mercury. The gold stampede to the Nome area in the period 1899–1900 was Alaska's largest in both amount of gold recovered and population increase. The gold fields yielded more than $57 million from 1898 to 1910. The site is now a National Historic Landmark, the Cape Nome Mining District Discovery Sites. In Grinnell's letters, he described a chaotic scene as "the entire eight miles there is scarcely one hundred feet without one or more tents on it ... our claims are now covered with beach jumpers and we cannot get them off. Mob law rules." The Cooper Ornithological Club published Grinnell's field notes in 1900 as Pacific Coast Avifauna, no. 1. Education Grinnell was graduated from Pasadena High School in 1893 and enrolled in Throop Polytechnic Institute (now California Institute of Technology) that autumn, where he received his bachelor's degree in 1897. In 1901 Grinnell received his master's degree from Stanford University. At Stanford, he met several influential people, among them were Edmund Heller. Heller would later join an expedition to Peru in 1915 to explore newly discovered ruins of an Incan civilization at Machu Picchu. During his time at Stanford Grinnell formed the plan for a list of birds of California. He