Tolkien was constantly revising his First Age stories; however, the narrative he wrote in 1917, published posthumously in the Book of Lost Tales, remains the only full account of the fall of the city.
Tolkien je neprestano prepravljao priče o Prvom dobu; ipak, pripovjetka napisana 1917. godine i objavljena posthumno u Knjizi izgubljenih pripovijesti jedina je cjelovita koja govori o padu Gondolina.