On February 1, 1928, Pendleton introduced the Rainier Park.
It had overstitched ends and had a border design of flowers -- 
lupin, paint brush and daisy -- on one of three color bodies: 
white, light blue or moss green.   Here it is in white:

Rainier flowers overall

  The four red points that appear in the lower left hand corner of the center field indicate the blanket's size,
66 inches wide by 80 inches long.  The lupin appear in  blue at the top and bottom of each band.
      The large daisies are also in blue along the inside of each band, while the paint brushes
             (alternating top to bottom) appear in red along the center of each band.   

The first design eventually gave way to today’s Rainier design, 
three stripes of black, yellow and green at each end of a bright red body.  

Blankets identical to the above red Rainier Park have also
been found with just the standard Pendleton blanket label.

The early Rainier Park blanket label was similar to a contemporary 
Rainier National Park Paradise Inn scalloped luggage sticker.

     

The Rainier Park was also available with black, yellow and red stripes 
on a green body, and with two black stripes at each end of a red body. 

         

Another Rainier Park variation consists of muted stripes on a pinkish beige field:  


The Rainier Park reappeared in the 1950s and continued to be 
available through 1964.  It was dropped for 1965 but returned 
in 1966, when the Zion was discontinued.  Because it came in so
many variations over the decades, its label is the best identifier.