If I use https://stevemorse.org/ellis2/ellisgold.html and enter First Name starts with 'J', last name starts with or is Kolar, and year of arrival 1906 to 1908 and month Feb... I get 3 hits. The first is Janos Kolar from Gromos. You can play with the entry features of the website to get more hits. This assumes he came through Ellis Island.
I looked at a database "Baltimore, Maryland, U.S., Passenger Lists, 1820-1964" but no one seemed to fit. What is the source of your information? Can you provide a birth year as well?
I was given a manifest list of passengers from Bremen dated Feb 20 1907. Jozif Kolar was the last name on the list not sure if that was my grandpa. His date of birth was 6 10 1888. Thanks for checking
What is the ship name? What is the port of arrival? Where did you find his date of birth? What sheet/list # and line # is he on? Is the date the arrival date or the date the ship left Bremen?
