Final answer:
A specific Boston advertising solicitor responsible for the expansion of the magazine as an advertising vehicle was not identified, but during the late 19th and early 20th centuries, advertising became crucial to business competition, with professionals in agencies expertly connecting firms with consumers, particularly through magazines.
Step-by-step explanation:
The individual responsible for expanding magazines as an advertising vehicle in Boston was not specifically mentioned in the provided references. However, we know that in the era of the late 19th and early 20th centuries, advertising saw tremendous growth due to increased competition among businesses selling a wide range of consumer goods. Advertising agencies began to flourish in the 1880s, with professional solicitors and experts in consumer demand who worked to connect major firms with their target audiences through print media.
Colorful and provocative print advertisements in publications such as Ladies Home Journal and The Saturday Evening Post became staple methods for reaching middle-class consumers. By 1900, American businesses were investing heavily in advertising, spending almost $100 million annually. This need for advertising space led to newspapers expanding their formats to accommodate full-page ads.
Magazines followed suit, and their role in advertising was pivotal in promoting a wide range of products, from cars to household appliances and processed foods. It is within this historical context that an unnamed Boston advertising solicitor likely made significant contributions to the use of magazines as an effective medium for advertising, shaping the future of consumer marketing.