1902 Vapo-Cresolene & Conklin's Self Filling Pen Advertisements

This original 1902 magazine page measures @ 6 X 9" and the lower corner is missing.  However there are several nice ads that give period details of products that are considered collectible today.  On the front lower left is a undamaged ad for the Conklin Self-Filling Pen - for pen collectors this ad is almost as rare as the pen itself.  Ad is @ 2 x 3"

On the reverse side is an ad for Vapo-Cresolene vaporizer  The lower left corner is missing, but what intrigued me is as the owner of the "burner" I never new it came with a small glass chimney as my item is missing that feature.  This is the value of old advertising to modern collectors.