Materials are arranged in chronological order, followed by undated items arranged in alphabetical order by title.
Box 1 Folder 23 Portrait bust, drawing., [1897], Watercolor, graphite and conté crayon on paper.
Box 1 Folder 24 Interior, sketch., 1899, Watercolor, ink, metallic paint and conté crayon on paper.
Box 1 Folder 25 Travel sketch., 1899, Watercolor, graphite and conté crayon on paper.
Box 1 Folder 25 Travel sketch., undated, Watercolor and ink on paper.
Dr 179o Portraits, drawings. [1 of 2], 1907 Jan 17 and undated, 9 items; Graphite on tracing paper.
Dr 179o Portraits, drawings. [2 of 2], 1909 and undated, 7 items; Graphite on tracing paper.
Dr 179o Exhibition Poster., 1908 May 26-1908 Jun 06, Ink and watercolor on paper.
Box 1 Folder 26 Sketch of a woman., 1924 Nov 12, Sepia diazo print on paper.
Box 1 Folder 27 Sketch of a plant., 1931 Jan 29, Conté crayon and graphite on paper.
Box 1 Folder 28 Ruth Sobotka. Costume Designs for Twelfth Night., 1943 Oct, Watercolor and ink on paper, mounted.
Box 1 Folder 29 An Old Woman, portrait., undated, Ink, conté crayon and graphite on paper.
Dr 179o Canal., undated, Black and white photographic print.
Roll A55.06 Maypole Celebration., undated, Graphite and colored pencil on tracing paper.
Dr 179o Town Hall, Oudenarde., undated, Ink and watercolor on paper, mounted.
Dr 179o A Man sketch., undated, Ink on paper, mounted.
Materials are arranged in alphabetical order by title.
Dr 179o Internationales Fechtturnier Poster, Walter Sobotka, Silver Medalist., 1911 May 19-1911 May 23, Printed paper.
Box 4 Folder 29 Correspondence, [Dagmar ?] to Sobotka., 1966 Aug 28-1967 Feb 20
Autograph letter, signed.
Box 4 Folder 28 Correspondence, Carmela Haerdtl to Sobotka., 1967 Jan 25-1967 Mar 01
Typed letter, signed.
Box 4 Folder 30 Correspondence, Sobotka to Carmela Haerdtl., 1967 Jan 31
Autograph letter, signed
Materials are arranged in alphabetical order by title.