https://collections.arolsen-archives.org/en/search/person/7078173?s=schwarz%20Wilhelm&t=0&p=12
https://collections.arolsen-archives.org/en/search/person/130570692?s=schwarz%20Wilhelm&t=2731315&p=12
https://collections.arolsen-archives.org/en/search/person/5278009?s=schwarz%20Wilhelm&t=751032&p=13