Parthenon and snow crystal.  From Nature's Harmonic Unity by Samuel Colman, 1912.

From Krokodil, 1960.

Egyptian canon.  From Nature's Harmonic Unity by Samuel Colman, 1912.

Orbits of the inferior and superior planets.  From Nature's Harmonic Unity by Samuel Colman, 1912.

From Le Journal Amusant, 1901.  Here's how to fold this origami costume.  ;-)

You've heard of "less than one percent."  Here's what it looks like.  From Popular Mechanics, 1927.

From Popular Mechanics, 1930.

There's been talk of the "public face of mathematics," the "changing faces of mathematics," the "new face of mathematics," even the "other face of mathematics."  Here's the "human face of mathematics," from Popular Mechanics, 1927.

How old were you "three seventh years two centuries ago"?  From A Reputed Changeling or Three Seventh Years Two Centuries Ago by Charlotte Mary Yonge, 1889.

"The cubical city unfolded."  From The Apocalypse Unsealed, Being an Esoteric Interpretation of the Initiation of Iôannês ('Apokalypsis 'Iōánnou) Commonly Called the Revelation of [St.] John by James M. Pryse, 1910.

We're honored that our research into Roman numerals for One-Letter Words: A Dictionary was cited in Introduction to Computer Data Representation by Peter Fenwick, 2014.

"God bless you—you and fractions!"  From Ambition magazine, 1911.

A mathematician finally understands the notion of infinity.  From Jugend, 1911.

Previously, we saw how a sense of infinity can be heightened by floating mist.