1932 Polk Listing

I found a book called The Polk Listings that shows the addresses of houses and businesses. In the 1932 edition I found the Exchange Building. It was not in the 1930 edition. So I'll assume that 1932 was it's first listing.

EXCHANGE BLDG - 600 Exchange Av.
18-A Graham Roy A livestk.
101 Union Stock Yds ofc.
104 Rodgers Livestk Co.
105 Peck Bros Livestk Com Co.
107 Patterson Alex Livestk Com Co.
108 Merrion & Wilkins Com Co.
111 Postal Telg Cable Co br ofc.
112 Dee C M.
115 Farmers Union Livestk Com Co.
117 Western Union Telg Co br ofc.
118 Exch Barber shop.
120 Union Stk Yds Frt ofc ( UPSPOSL)
200 Clay John & Co livestk.
206 Ogden Livestk Sup Co.
208 Smith W R & Sons livestk.
210 U S Dept of Agrl (Bur of Animal Industry).
210 U S Dept of Agrl (Bur of Economics).
215 Keller Lewis L livestk.
216 Ogden Livestk Digest.
216 Ogden Livestock Show Inc.
217 Ogden Livestk Com Co.
217 Ogden Livestk Feeding Co.
220 Felsted Warren H livestk.
220 Lynn Acton livestk.
base Ball Gary L restr.