The back of the original photo shows the photographer as J.J. Hille, 3452 South Halsted, Chicago. The location of his studio was about a mile from the Vanderkloot Iron Works at 2611 S. Halsted and the general location of the Vanderkloot’s home at the time. It is the same photographer that took the “Probably Trijntje Vanderkloot’s 50th Anniversary Portrait - November 15th, 1901” and possibly the “Probably Adrianus and Martha Vanderkloot's 20th Anniversary Family Portrait - December 26, 1902”.
Other descendants have originals of this portrait. I found this one in my grandmother’s Grace Vanderkloot Filipek’s collection. That is the one displayed and which shows the photographer as J.J. Hille. If you would like to add information about this photo, please contact Dave Jordan, a great-grandson of Adrianus and Martha Vanderkloot. The Picture Reference Number is JCJ05.