Talvez deva tentar algumas variações de ortografia:
walter viola » walter vilella (Expandir a Pesquisa), walter villela (Expandir a Pesquisa), walter jolan (Expandir a Pesquisa)
mader ichem » mader michael (Expandir a Pesquisa)
mather them » master them (Expandir a Pesquisa), mather em (Expandir a Pesquisa), mather hm (Expandir a Pesquisa)
maier i.l » maier il (Expandir a Pesquisa), maier ina (Expandir a Pesquisa), maier c.s (Expandir a Pesquisa)
j mather » j mathew (Expandir a Pesquisa), j maher (Expandir a Pesquisa), j matthew (Expandir a Pesquisa)
viola de » viola _ (Expandir a Pesquisa), viola a (Expandir a Pesquisa), viola b (Expandir a Pesquisa)
j mader » j madera (Expandir a Pesquisa), j madsen (Expandir a Pesquisa)
ichem a » hichem a (Expandir a Pesquisa), lichem a (Expandir a Pesquisa), ochem a (Expandir a Pesquisa)
a maier » b maier (Expandir a Pesquisa), _ maier (Expandir a Pesquisa), a mailed (Expandir a Pesquisa)
i.l m » d.l m (Expandir a Pesquisa), ill m (Expandir a Pesquisa), j.l m (Expandir a Pesquisa)

You can also try:

• Europeana
• Digital Public Library of America
• CORE

Pode obter mais resultados ajustando a pesquisa.

• Performing a fuzzy search may retrieve terms with similar spellings: (( j mader ichem a maier i.l m ) or ( j mather them _ walter viola de ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j mader ichem a maier i.l m ) OR ( j mather them _ walter viola de ))*.