Autogr. Hasselt-Barth, Maria Wilhelmine von(2)
Kurt-Taut-Slg./5/Go-Hed/H/214(1)
Mus.ep. Hasselt-Barth, W. M. v. 1(1)
Mus.ep. Hasselt-Barth, W. M. v. 2(1)
Mus.ep. Hasselt-Barth, W. M. v. 3(1)
Mus.ep. Hasselt-Barth, W. M. v. 4(1)
Mus.ep. Hasselt-Barth, W. M. v. 5(1)
Mus.ep. Hasselt-Barth, W. M. v. Varia 1(1)
Mus.ep. Hasselt-Barth, W. M. v. Varia 2(1)