Question: Where does English writing first make mention of pho?
About the article "Pho", section "Etymology and origins".

Candidate passages:
Reviews of 19th and 20th century Indochinese literature have found that pho entered the mainstream sometime in the 1910s.
Georges Dumoutier's extensive 1907 account of Vietnamese cuisine omits any mention of pho, while Nguyễn Công Hoan recalls its sale by street vendors in 1913.
A 1931 dictionary is the first to define ' as a soup: "from the word '.
A dish consisting of small slices of rice cake boiled with beef.
"Possibly the earliest English-language reference to pho was in the book "Recipes of All Nations", edited by Countess Morphy in 1935: In the book, pho is described as "an Annamese soup held in high esteem ... made with beef, a veal bone, onions, a bayleaf, salt, and pepper, and a small teaspoon of "nuoc-mam"".
"There are two prevailing theories on the origin of the word "" and, by extension, the dish itself.
As author Nguyễn Dư notes, both questions are significant to Vietnamese identity.
"Dir", directed, "pho", photographed; "pro", produced.
"The Artist's Horse".
20 minutes, for "The South Bank Show", 1978.
"Dir, pho, pro" "Beehives and Runaway Wives".
For the Discovery Channel, 2002.
"Dir, pho" "Bull Magic".
For "Under the Sun" (BBC) and National Geographic, 1994.
"Dir, pho, pro" "Dances with Llamas".
50 minutes, for "Under the Sun" (BBC), 1997.
"Dir, pho, pro" "Empty Quarter".
50 minutes, for "Journeys" (BBC), 1996.
"Dir, pho" "Fat Fiancees".
For the Discovery Channel, 2005.
"Dir, pho" "Finite Oceans".
1995.
"House of the Spirits".
For the Discovery Channel.
"Dir, pho" "How Does It Feel?".
Pictures that Move, 1976.
"Pho" "Månen är en grön ost".
72 minutes, Stiftelsen Svenska Filminstitutet, 1977.
"Pho" "Mud and Water Man".
For the BBC, 1973.
"Pho" "A Mysterious Death".
49 minutes, for the BBC, 1999.
"Dir, pho" "Now Is the Hour".
1970.
"Dir" "The Painter and the Fighter".
For "Survival" (Anglia), 1996.
"Dir, pho" "Queen of the Elephants".
90 minutes, for the Discovery Channel, 1994.
"Pho" "The Search for Shangri-La".
50 minutes, for the BBC and PBS.
"Dir, pho" "Stick Fights and Lip Plates".
50 minutes, for the Discovery Channel.
"Dir, pho" "Sunday Pursuit" (or "Love at First Sight").
25 minutes, 1990.
"Pho" "The Tide of War."
50 minutes, for National Geographic, 1991.
"Pho" "Up North".
1970.
"Dir" "Vincent the Dutchman".
50/52/60 minutes, for "Omnibus", 1972.
(Winner of a BAFTA award for "Television: Specialised Programme" in 1973.)
"The Witchdoctor's New Bride".
50 minutes, for the Discovery Channel, 2005.
"Dir, pho" "Women of the Yellow Earth".
50 minutes, 1994.
"Dir, pho"  
Aside from pho, many other Vietnamese dishes make use of pho noodles, including stir-fried pho ('), sauteed pho ('), and sour pho ("").
Other popular Vietnamese noodle dishes include bún riêu, bún bò Huế (another beef noodle style), bún chả, hủ tiếu, bún thịt nướng, and mì Quảng. 
In the aftermath of the Vietnam War, Vietnamese refugees brought pho to many countries.
Restaurants specializing in pho appeared in numerous Asian enclaves and Little Saigons, such as in Paris and in major cities in Canada, the United States, and Australia.
In the United States, pho began to enter the mainstream during the 1990s, as relations between the U.S. and Vietnam improved.
At that time Vietnamese restaurants began opening quickly in Texas and California, spreading rapidly along the Gulf and West Coasts, as well as the East Coast and the rest of the country.
During the 2000s, pho restaurants in the United States generated US$500 million in annual revenue, according to an unofficial estimate.
Pho can now be found in cafeterias at many college and corporate campuses, especially on the West Coast.
The word pho was added to the "Shorter Oxford English Dictionary" in 2007.
Pho is listed at number 28 on "World's 50 most delicious foods" compiled by "CNN Go" in 2011. 
In 2004, Pho started the blog, KevinMD, where he writes about medical news.
In 2009, his blog received 1.4 million unique visitors.
That year, Pho raised $1,000 to support the United Way of Greater Nashua by using his Twitter and Facebook profiles.
Pho is on USA Today’s board of contributors.
He is also a contributor to The New York Times’ “Room for Debate” and CNN.