Forgotten by some, maybe, but there are many Iranian-American and Armenian-American families with medlar trees in their suburban LA yards. It is sold at Paradise Nursery in Chatsworth.
While "nespole" is apparently sometimes called "Japanese Medlar" in English, they are more usually called "Loquat" (Eriobotrya japonica): https://en.wikipedia.org/wiki/Loquat
You might mistake them in a black-and-white photo, but otherwise are easily distinguished. Neither is well known in most of the US, but the loquat is commonly grown in California yards while the medlar is a true rarity here.