I came across your message while looking for a similar name. Did you look at the WW I Draft Registration records? There is one for a similar name. It is indexed under Steven Vuchko but if you look at the signature it looks like Stefan Vuchko. It is a little hard to read but it looks like the date of birth is listed as 12/19/1884. His address looks like 961 W. 18th St, Chicago, IL. He was a Laborer at Continental Can Co., 22nd & Halstead, Chicago, IL. It lists nearest relative as Mary (?) Vuchko of the same address. He is listed as alien and it looks like Austria Hungary is written. Short, medium build, blue eyes, brown hair. It was signed 9/12/1918.