Kalgan

Of the Mongall Tartars. The Mongalls are a numerous people, and occupy a large extent of country, from this place to the Kallgan, which ſignifies the everlaſting Wall, or the great wall of China. From this wall they ſtretch themſelves northward as far as the river Amoor; and from the Amoor, weſtward, to the Baykail ſea ; where they border with the territories of the Kontayſha, or prince of the black Kalmucks. On the ſouth, they are bounded by a nation called Tonguts, among whom the Delay Lama has his residence.

[1767, Annual register, or a view of the history and politics and literature for the year, page 38, column 2

It may here be mentioned that the traveller who obtains Russian official assistance can cover the distance between Moscow and Peking in thirty and a half days—that is to say, by rail to Irkutsk, ten and a half days; thence to Kiachta by the post-road, four days; Kiachta to Urga by post-road, three days; thence to Kalgan over the Gobi Desert in ten days, or even less; Kalgan to Peking in three days.

1900, Archibald R. Colquhoun, The 'Overland' To China, Harper & Brothers, page 121

So you turn your back upon Peking, and the railway takes you to Kalgan on the edge of the great plateau. […] The Kalgan-Peking railway was the first thing of the kind constructed by the Chinese, and the engineer in chief, Chang-Tien-You, did the work so well (he was educated in America, one of the group that came in the early seventies) that he was later put in charge of the railway that was to be built from Canton northwards.

1913, Elizabeth Kendall, A Wayfarer in China: Impressions of a Trip Across West China and Mongolia, Houghton Mifflin Company, pages 233-234

While the main party was at Peking, Dr. Wilbur went northward to visit the interesting and important mission station at Kalgan. Kalgan is one hundred and twenty miles to the northwest of Peking, and is reached by a Chinese government railroad, the first railroad built by a Chinese engineer.

1914, Frank L. Brown, A Sunday School Tour of the Orient, Doubleday, Page & Company, page 307

On one occasion on a return journey from Shensi I came into Kalgan, a gate to the Great Wall of China, on Christmas Eve, with snow and temperatures below zero. The caravan was tired out from my days of pushing to arrive home for Christmas with Mrs. Hoover, and that proved impossible, for our retinue had to rest.

1951, Herbert Hoover, The Memoirs of Herbert Hoover, Years of Adventure 1874-1920, New York: Macmillan Company, →OCLC, →OL, page 42