There's Always Room for One More at a Trailer Camp But..Where?

Front:
THERES ALWAYS ROOM FOR ONE MORE ATA TRAILER CAMP C-838 G-R-R R-R SPO BUT WHERE ? CURT TEICH & CO., INC. 5C-H22 y 0 МО 11

Back:
SATC PLACE STAMP HERE REDDCKYCARD OG GENUINE CURTEICH-CHICAGOC.T. ART-COLORTON E POST CA D (REG,