
1.A.S. TO SPONSOR SECOND CRUISE ON LAKE MICHIGAN 
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BOAT CRUISE 
___ CHICAGO INLAND WATERWAYS 
May 8, 1971 
Saturday 
EMBARK: 8:45 A.M. from the Wendella 
dock at the Michigan Avenue Bridge, 
Michigan and Wacker (northwest side). 
DISEMBARK: same point at approximately 
4:00 P.M. 
This is a rare opportunity to view the ecology and geography of this area so important to the development of Greater 
Chicago. You will cruise on Lake Michigan, through Calumet Harbor and the O’Brien Locks, and on the Calumet-Sag 
Channel, the Chicago Sanitary and Ship Canal and the Chicago River. From waterways unique because of their reverse flow 
you will see shipping both international and barge, bridges of great variety, steel mills, oil refineries, heavy industry, forested 
areas and, from the Lake, the Chicago skyline. Competent narrators will comment on the highlights and their historical 
significance as we proceed. Pollution problems and the role played by the Metropolitan Sanitary District will be discussed as 
will be the future possibilities for water oriented recreation. 
A box lunch will be served en route. Beverage also supplied. 
The cost will be $9.00 per person to be mailed in with the reservation below. Reservations, which will be honored in the 
order of receipt, must be in by May 1. Checks should be made payable to the Illinois Audubon Society. 
RESERVATION 
ILLINOIS AUDUBON SOCIETY, 1017 BURLINGTON, DOWNERS GROVE, ILL. 60515 
Please send tickets at Name 
$9.00 each: enclosed is my check for $ Address 
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