Well, I’m not sure how to feel about posting this advert pulled from the Media History Digital Library, because the name of the company bears no connection to the people, that I can tell …

… but Ojibway Publications was a nationally significant trade-magazine publisher located in Duluth.

According to the Duluth News Tribune, Ojibway …

trace[s] its roots in Duluth back to 1939, when Davidson Publishing Co. was formed. In 1961, Davidson Publishing was divided into Davidson Printing and Ojibway Press.

Harcourt Brace Jovanovich purchased Davidson and Ojibway in 1968. At its peak, the company employed about 1,200 people in Duluth.

Funding Universe tells us more about Ojibway, a predecessor of Advanstar:

In 1961 Edgell joined with a number of other parties to found a firm called Ojibway Press, headquartered in Duluth, Minnesota. It absorbed Davidson Publishing as part of a joint venture, and soon acquired another company called Knit Goods Publishing, owners of Lingerie Merchandising and Hosiery and Underwear Review.

Over the next few years Ojibway built up its list of titles to 21, including such publications as Meat and Industrial Gas. In 1968 it was sold for $5.5 million in stock to Harcourt, Brace & World (later known as Harcourt Brace Jovanovich, or HBJ).

Ojibway would form the backbone of Harbrace Publications, Inc., which was also made up of Byrum Publications, Brookhill Publishing Co., and several titles purchased from Haire Publishing Corp.

Other publications are listed in the advert above.