There is a typographical error in issue 11.
On page 7 it indicates that a search of probate/estate records for Rolf Habben should be conducted. The year this search should start is 1891, not the year stated in the PDF version.
I'd like to say the error was intentional to make an instructional point. Unfortunately that was not the case. Searches for probate records should always start the year the individual died.
Casefile Clues readers with good memories will remember an individual who did have estate records and was not dead. In fact, he had two!