This old fashioned transistor amplifier was found in a publication of the year 1958. Transformer are the critical components in the circuit and power comes from 6 D cells.
This circuit for experimental radios and other applications is from a documentation from the 50's....
January 2017 - Now available on Mouser Electronics, Texas Instruments' new LDC2114EVM Evaluation Module...
This touch switch appears elsewhere on this site from various documentation. This is from an 80's...