4 Vintage Case Tractor Advertising Brochures Flyer Letter Caterpillar 1940s

Description

This is a lot of 4 vintage Case tractor advertising pieces, likely from the 1940s:
Brochure that looks like a typewritten letter on the front cover, 4 pages.  Some scribbles.
"Grooming the Green" flyer with printing on the front.
"Takes the load off a dozen strong backs" flyer with printing on the front, handwriting on the back.
"Less Bother from Obstacles" flyer with printing on the front,
some of
the folds are uneven.