See also the advertising for
Epiphone,
Fender,
G&L,
Gibson,
Gretsch,
Guild,
Hagstrom,
Harmony,
Marshall,
Martin,
Music Man,
Ovation,
Rickenbacker,
Vox,
WEM
Vintage Epiphone advertisements; 15 adverts covering a period of 23 years, from 1953 to 1976. Click the images to have a closer look.

Harry Volpe the Artist Plays Epiphone the Artist Guitar
Epiphone Emperor - 1953

Epiphone Tremotone. Vibrato for the guitar.
Epiphone Sheraton - 1962

Give Me the Simple Life... and a Great Guitar
Epiphone Casino - 1963

Success Stands Behind This Name - Epiphone
Epiphone Rivoli - 1963

These are instruments that go to the top
Epiphone Casino - 1964

Portrait of Guitar Genius with Gifted Guitar
Epiphone Caiola - 1965

Tasty Guitar
Epiphone Caiola - 1966

Jazz guitarist Howard Roberts - Color Him Incredible
Epiphone Howard Roberts - 1966

More and More People Every Day Find Us Just That Little Bit Better - In Every Way
Epiphone Riviera - 1966

Now! The Shape of Things To Come
Epiphone Riviera - 1967

Creative Guitar
Epiphone Howard Roberts - 1967

Is There Something Fishy About Epiphone Guitars?
Epiphone Riviera - 1967

7 New Epiphones At Fantastic New Prices
Epiphone ET-270 - 1970

7 New Epiphones At Fantastic New Prices
Epiphone ET-270 - 1971

Epiphone - world famous quality since 1873
Epiphone Casino - 1976
1967 Epiphone Ad featuring a psychedelic fish playing an Epiphone Riviera
1967 Fender Ad - Full Colour Sound
1973 Fender Stratocaster add - The Worlds Favourite Flying Machine
Guitar makers have advertised in music magazines such as Down Beat, Guitar Player and very many more. Some manufacturers advertised widely (Guild, Gibson, Fender) but many more didn't and adverts are few and far between. Here are some of my favourite ads out of the ones i've seen. You can browse through all the images from the category links above, or by manufacturer from the links below.
AMPS
Ampeg, Leslie,
Marshall, Orange, Peavey, Sunn
GUITARS
Epiphone,
Fender,
G&L,
Gibson,
Gretsch,
Guild,
Hagstrom,
Harmony,
Martin, Music Man, Rickenbacker,
Vox