THE YORK
"Dances of Early California"
Polka-Mazurka variant.  Tune given is "One Heart, One Soul", also seen in 
Barnes black book.  Other polka-mazurkas are fine.
3/4 time, distinctive accents.  Four-measure sequence.
First foot: M:L W:R

Closed couple position (but not _too_ closed).

Step: Glide close glide close hop glide step leap
       L     R      L      R   R    L    R    L

1:  On first foot, directly sideward in that direction:
    Glide (1), close (2), close (and) hop (3); no turning.

2:   With first foot, glides diagonally forward that direction (1), 
     close second foot while pivoting on first foot to make 1/2 turn
     CW; leap sideward left on first foot.

3:   Repeat measure 1 on second foot.

4:   Repeat measure 2 on second foot, still turning CW.

"It requires the four measures as described to dance the movement pattern.
The distinctive quality of the step pattern is the hop-step.  
On the hop the free foot is lifted and brought close to the ankle of the foot
taking the hop, as in the mazurka step.  The leap is very light and quite
unnoticeable.  At a later period a step was substituted for the leap."