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Ad – 1929: X-Ray Kathoscope Pocket Detector

X-Ray Kathoscope Periscope Ad, Air Wonder Stories, August 1929, page 191.
X-Ray Kathoscope Periscope Ad, Air Wonder Stories, August 1929, page 191.

X-Ray KATHOSCOPE, Pocket Detector, Everybody wants it.

See your best girl and all she’s doing. No one knows; but you see everything. Periscope operates in all climates; lasts lifetime, ready for use. $1.00 cash with order for this wonderful instrument and 8 astonishing French pictures.

KATHOS CO., P. O. Box 830 City Hall Post Office, Dept. AW, New York City

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