This is what I have on Joes & Joe Jr. Gascos from Emmet. (There may be more, but this may help - also, check for my tree)

Birth Liber:
Joe Jr. b. stillborn Sept. 10, 1929 to Joseph and Louise
John b. April 15, 1920 to Joseph and M. Flinn

Oddly, George m. Louisa M. Flinn (parents John Flinn & Marion(a) Benfentidowar in H.Springs). George's parents were Amos and Thresa, who had gobs of kids, including a Joseph.

Their Joseph was b. in 1894 in Emmet.
Oddly enough, the 1930 Census has Joseph m. Louisa w/Margaret Flinn as his son-in-law. The forementioned George record is from Emmet Co., Marriage Liber, so I'm confused here. http://search.ancestry.com/cgi-bin/sse.dll?db=1930usfedcen&a...

In a later m.record (for which I didn't write date, but rec #13), I show Joseph Gasco/Louise Flynn as the parents of
John Gasco, 31, millhand, Harbor Springs/Petoskey m.
Irene McCary 25, Indian from same area, parents Harry McCary & Norma Corssett.

Hope that helps a little.