I took a look at your public tree, regarding Frederick W. Bosch.

He can be found in the 1920 Census

Born about 1884 in Holland
year of immigration 1886

I am having trouble locating him in any of the other census' your best bet is to find him in the 1900, 1910 and 1930 census' first for more clues.

If he came over as a 2 year old he came with his parents.