The 1900s

Why it mattered

This is the decade advertising stopped being an assertion and became an argument. Two forces did it: colour presses made the advertisement worth looking at, and federal law made a large part of the existing trade illegal. What survived the decade was a different business.

What changed

Colour arrived. Four-colour process halftone reached commercial viability around 1906. The back cover, printed in full colour on coated stock, became the most expensive position in the magazine. For the first time an advertisement could compete visually with the editorial pages surrounding it.

The largest category collapsed. Federal food and drug legislation in 1906 required disclosure of contents and made false labelling actionable. Patent medicine had been the biggest advertiser by expenditure for fifty years. Much of it did not survive contact with a law requiring it to say what was in the bottle — and the money moved to soap, packaged food, tyres, and automobiles.

Circulation was still unverified. Publishers reported their own figures and advertisers had no way to check them. Independent auditing did not arrive until the following decade, so the 1900s is the period of the most inflated claims — a point worth remembering when reading rate cards from these years.

The techniques Reason-why copy — state the claim, then give the mechanism behind it. Argument replaces testimony as the default structure Keyed coupons — a code printed in the advertisement identified which publication produced each reply, making response measurable for the first time The demonstrable claim — describing a manufacturing process the competition also used, but describing it first, so the audience credits it to one brand Full-page painted illustration — commissioned art carrying the pitch, with copy reduced to a caption Registered trademark notice — the statutory mark appearing in advertisements from 1905, signalling that a name was legally defensible The slogan as fixed asset — one line repeated unchanged across years and formats, treated as property rather than copy Before-and-after — visual proof structure, retained from the medicine trade and applied to soap, cosmetics, and household goods What it left behind

By 1910 the elements of modern advertising were in place: a measurable response, a legally protected name, a professional agency writing the copy, and a colour page competing for attention. Everything after this is refinement.