The Will o' the Wisp - 1921 was released on:
USA: 6 February 1921
The Will o' the Wisp - 1914 was released on: USA: 21 September 1914
Lights Out - 1946 Will-o'-the-Wisp 4-6 was released on: USA: 1 October 1951
Cyphers - 2010 Will O Wisp 1-2 was released on: USA: 15 November 2010
Out o' Luck - 1921 was released on: USA: 19 February 1921
So Weird - 1999 Will 'O the Wisp - 1.13 was released on: USA: 23 April 1999 (re-release) Japan: 11 October 2001
Man Against Crime - 1949 Will o' the Wisp 5-22 was released on: USA: 7 March 1954
Mother o' Dreams - 1921 was released on: USA: 18 September 1921
Whirl o' the West - 1921 was released on: USA: 23 January 1921
So Weird - 1999 Will 'O the Wisp 1-13 was released on: USA: 23 April 1999 (re-release) Japan: 11 October 2001
Will o' the Wisp - comics - was created in 1977.
Wisp o' the Woods - 1919 is rated/received certificates of: UK:U
If you are doing the Azura's shrine quest, then there should be about four will O the wisp's in that area. Other than the that, the only place I could find the will O the wisp dust or remains was in the imperial market district at the alchemy shops. Hope that helps :)