Caroline Walker, The Modern Dances — Chapter VIII. The Argentine Tango (1914)
“ Four steps backward by the man and forward by the lady; one step to each count of the music. The man starts with the weight of his body on the ball of the right foot, the first step being taken with the left foot in this manner: Slightly bending the right knee place the toe of the left foot directly behind the right heel. As you straighten the right knee throw the weight onto the left foot and repeat the step with the right foot, bending the left knee. Once more with the left foot and again with the right, completing the four introductory steps. ”
