This card was used by the General Services Administration in acknowledgement of a request for postal information. Modern technology and the Internet probably made this form obsolete.
As seen on the back, this is GSA form 148 and was printed by the GPO in August of 1970 just prior to the advent of the United States Postal Service, hence the old POD pictorial vignette on the face of the card. The card appears to have been used in late 1972 based upon information on the reverse.
Place mouse on image to see the reverse side of the card.