The object of the “Charles D. Duffy, Branch No. 11, of Chicago” shall be to unite all Letter Carriers and non-supervisory employees of the United States Postal Services in this Branch. We will make a consolidated effort to better all working conditions; to promote harmonious relationships between the Postal Service and our membership, and to assist our National Association of Letter Carriers in their efforts for the welfare of our entire membership.

– Branch 11 By-Laws