Vit-213,
The CAMCO brand was introduced in 1948. Most of the knives were made in the Camillus factory by the same workers that made Camillus and other brands of knives. During the 1980's some of the CAMCO knives were made in Ireland at a company owned by Albert Baer (owner of Imperial/Schrade and father of the owners of Camillus Cutlery Co.). During the last years that Camillus was open some knives were made in China (I do not have any information on these knives-CAMCO Workhorse brand. Perhaps someone from Camillus has the specifics on these knives.)
CAMCO knives were a lower priced line and many were sold as give-aways, souvenier or advertising knives. The handles were sometimes hot stamped with a company name or logo. Many were stamped with a popular tourist spots location, like "Souvenier of Niagara Falls".
CAMCO knives also included many of the character knives like "The Lone Ranger", "Daniel Boone" and "Dick Tracey". A space ship shaped knife with a whistle was introduced in the early 1950's. A round "Charm Knife" that had a key ring and a company's advertisement under a transparent plastic cover was an advertising knife offered in the 1950's. Go to the website Collectors of Camillus Knives.com to see some of the ads for CAMCO knives.
Tom Williams