What's the font used for Quaker (1969) logo?
The closest font we can find for Quaker (1969) logo is ITC Eras Demi, which is a humanist sans serif font designed by Albert Boton & Albert Hollenstein and published by ITC.
Sources & Links:
ITC Eras Demi Font on myfonts.comITC Eras Demi Font on fonts.com