I have ben a Deputy Sheriff for 29 years in a rural county and you are not REQUIRED to have written permission. I have also taught hunter safety classes for the past twenty years. Here is the cit. 520 ILCS 5/2.33 (CH 61 par 2.33) t)



t) It is unlawful for any person to trap or hunt, or

3

intentionally or wantonly allow a dog to hunt, within or upon

4

the land of another, or upon waters flowing over or standing on

5

the land of another, without first obtaining permission from

6

the owner or tenant. It shall be prima facie evidence that a

7

person does not have permission of the owner or tenant if the

8

person is unable to demonstrate to the law enforcement officer

9

in the field that permission had been obtained. This provision

10

may only be rebutted by testimony of the owner or tenant that

11

permission had been given. Before enforcing this Section the

12

law enforcement officer must have received notice from the

13

owner or tenant of a violation of this Section. Statements made

14

to the law enforcement officer regarding this notice shall not

15

be rendered inadmissible by the hearsay rule when offered for

16

the purpose of showing the required notice.

If you have any further questions the complete unabridged Wildlife Code can be found in the same location (you might have the GOOGLE the site)