Pretty Sneaky Sis

I was sorting through a stack of old Time Magazines yesterday when I come across these two:

One issue is from 1966, the other from 1967. Nothing special about these two, but they felt a little off, like the stapled binding had come loose. When I opened the first one up:

Very clever.

The other issue:

The issues in question:

Time - June 17, 1966 - General Giap cover
The Avengers - April 1966 #27

Time - August 18, 1967
The Avengers - September 167 #44

-Click to enlarge photos-