He possessed the gift of writing in characters so small that they could be read only by the aid of a microscope.
The Lord's Prayer was thus written by him nine times on a piece of paper the size of a square inch.
He was also a skilful draftsman, and he used to embellish his excellent pencil sketches with all kind of verses and sentences.
Blumenfeldt presented numerous script portraits to Emperor Alexander I of Russia, and a Torah, of the size of a finger, to Pope Pius VII.
[1][2] He left in manuscript Diaries of Travel; Pene Shim'on, a commentary on the Bible, published by his son Moses in his work, Magid Mesharim (Hanover, 1851); and Tenaim u-Ketubah le-Shev'uot ve-Purim, a humoristic poem.