farman

Anyone wondering who Ezra Meeker is, he is the owner of the oxcart in the foreground. Stig

I think the Aircraft is a Farman F30

French pilots. Here's one of the two officers in the plane:
See notes under

I's rather a Farman F.40 (en.wikipedia.org/wiki/Farman_F.40) IMO

I can't find a record of a Captain Hoppe, but this is French Capt. Maurice Happe on the right. His picture accompanies the following article: "This is the most well-known photo of Capitaine Maurice Happe (1882-1930), one of France’s most innovative bombing pioneers. He commanded Groupe de Bombardement 4 as well as Escadrille 29. One of his biographers described Happe in this way: His tall silhouette, all sinew and muscles, in a black artillery uniform without officer’s boards or decoration, stood out against the blue of the Vosges Mountains... He [was] obsessed with one concern: accomplishing everything that was his duty. His gaze softened or turned dark depending on his mood. He was subject to mood swings; there was something of the street Arab in his personality. But when he laughed, his brilliant white teeth reminded one of a wolf’s teeth." :La Guerre Aérienne Illustrée (LGAI)" www.crossandcockade.com/uploads/EscMF29_opt.pdf

Other Bain photos of Capt. Happe:

Prince Kuni Kuniyoshi (久邇宮邦彦王 Kuni-no-miya Kuniyoshi ō?, 23 June 1873 – 29 June 1929) was a member of the Japanese imperial family and a field marshal in the Imperial Japanese Army during the Meiji and Taishō periods. He was the father of Empress Kōjun (who in turn was the consort of the Emperor Shōwa), and therefore, the maternal grandfather of the present emperor of Japan, Akihito. en.wikipedia.org/wiki/Prince_Kuni_Kuniyoshi

"Yamanashi" may be an error for "Nashimoto," as no imperial branch family existed with the former name. Prince Nashimoto Morimasa (梨本宮守正王 Nashimoto no miya Morimasa ō?, 9 March 1874 – 2 January 1951) was a member of the Japanese imperial family, field marshal in the Imperial Japanese Army. An uncle-in-law of Emperor Shōwa, an uncle of his consort, Empress Kōjun, and the father-in-law of Crown Prince Euimin of Korea, Prince Nashimoto was the only member of the imperial family arrested for war crimes during the American occupation of Japan following the Second World War. en.wikipedia.org/wiki/Prince_Nashimoto_Morimasa

Assuming this photo was taken around 1917, this man is far too young to be Prince Nashimoto Morimasa (en.wikipedia.org/wiki/Prince_Nashimoto_Morimasa), who was born in 1874 IMO (and I think it was taken in 1917, because Prince Kuni looks like 44 years). A Prince Yamanashi as a member of the Imperial Household is mentioned in military.wikia.com/wiki/Wataru_Kaji as student at the Tokyo Imperial University in 1923. (This text apparently comes from 'Dilemma In Japan' by Andrew Roth, 1945, page 235 archive.org/details/dilemmainjapan017811mbp)

B-59 Believe you may be right about his age, but I still can't find a "Yamanashi" among the imperial branch houses by searching the Japanese web. There was a Prince Yamashina Yoshimaro, who was born in 1900 and might be about the right age in this photo. ja.wikipedia.org/wiki/%E5%B1%B1%E9%9A%8E%E8%8A%B3%E9%BA%BF

B-59 and KenjiB_48: Thanks for your input. We will add the more detailed information for Prince Kuni. We can add more about Yamanashi later if more details come to light.