This lot includes four vintage envelopes with return addresses from Tingley Telephone Co., Luck Telephone Co., Prairie Telephone Co., and  Rochester Telephone Co., postmarked 1953.  They are all addressed to Stromberg Carlson Co. Chicago, Ill.  My mother worked at Stromberg Carlson in the 1950s.   She was an avid stamp collector.  They are a great addition to any collection relating to communication and utilities, particularly telephone advertisements.  Please look carefully at the pictures for condition.   Please email me with any questions.   Thanks.