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Binoculars for 
Bird Watchers 
LEITZ TRINOVID BINOCULARS 
A Totally New Concept 
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Illinois Audubon Society 
1017 Burlington Avenue 
Downers Grove, Ill. 60515 
Creators of the world-famous 
Leica camera have perfected 
a new prism system that 
dramatically reduces binocular 
size and weight. It’s the first 
truly significant binocular ad- 
vancement in fifty years. The 
Trinovid 7x35 has an amazing 
450-foot-wide panoramic view- 
ing field at 1000 yards. The 
8x32 and even the 10x40 are 
more compact than conven- 
tional glasses of much lower 
power. And all Trinovid mo- 
dels have fast-action central 
focusing, are hermetically 
sealed, dustproof & weather- 
proof. 
MAKE YOUR RESERVATIONS 
FOR THE BOOMING GROUND TRIP 
ATTEND OUR ANNUAL 
MEETING - May 1,2,3, 
1970 - IN EDWARDSVILLE 
LT. GOV. PAUL SIMON, 
GUEST SPEAKER 


HERTEL & REUSS BINOCULARS 
I.A.S. field glasses are equal in 
performance and durability to 
the finest models anywhere. 
Yet they cost less than half 
as much as comparable binocu- 
lars. They are produced by 
Hertel & Reuss of Kassel, Ger- 
many, leading designers and —& 
makers of quality precision in- ie 
struments. Illinois Audubon 
Society has sold these for 15 
years; this income supports our 
conservation projects. Center 
focusing. 

For Price Lists, Full Information & Free Brochure, write: 
Illinois Audubon Society 
1017 Burlington Avenue 
Downers Grove, Ill. 60515 





Non-Profit Org. 
U. S. Postage 
PAID 
Downers Grove, Ill 
Permit No. 18 
UNIVERSITY OF ILLINOIS LIBRARY, 
SERIALS DEPARTMENT, 
URBANA, ILL. 61801 

