Willem Bastiaan Tholen, 1890, letter, RP-D-1982-43-THOLEN-10
Willem Bastiaan Tholen, 1889, letter, RP-D-1982-43-THOLEN-7
Willem Bastiaan Tholen, in or before 1889, RP-D-1982-43-THOLEN-9
Willem Bastiaan Tholen, 1911, letter, RP-D-1982-43-THOLEN-12
Willem Bastiaan Tholen, 1899, letter, RP-D-1982-43-THOLEN-11
Willem Bastiaan Tholen, 1885, letter, RP-D-1982-43-THOLEN-1
Willem Bastiaan Tholen, 1886, RP-D-1982-43-THOLEN-3
Willem Bastiaan Tholen, 1885, letter, RP-D-1982-43-THOLEN-2
Willem Bastiaan Tholen, 1888, letter, RP-D-2017-1823
Willem Bastiaan Tholen, 1888, letter, RP-D-2017-1824
