The Two-Man Set also known as "The Black Belt Set" initially, originally appeared in "Secrets of Chinese Karate" published in 1963. This was during Mr. Parker's Chinese Kenpo period under Sifu Ark Wong, when the only significant form was the Hung Gar version of "Tiger and the Crane," while other forms were a "work-in-progress" through the major efforts of Sifu James "Jimmy" Wing Woo.
When Mr. Parker changed directions abruptly to create his "commercial art," he did not bring any of the traditional Chinese material over in the process, because it was too labor intensive and required a knowledgeable instructor who would have to painstakingly teach and make corrections.
The "new" free form conceptually driven "Ed Parker's Kenpo Karate" was all about self expression akin to JKD, and designed first as a self-defense business that allowed students to "find what works for themselves." But, more importantly from Mr. Parker;s perspective, it did not require him to be on the mat with anyone on an extended or regular basis. It allowed him the freedom to travel and teach concepts, as opposed to being in a school all day and night telling students to "fix their feet," or "turn your shoulder" constantly as real basics training requires. The "system" essentially set him free to proliferate his ideas, at the expense of the meticulous basics training of the Chinese Arts which had to be abandoned for Ed Parker's Kenpo Karate to succeed.
"Big Red" was a Studio Owners Business Manual That contained a "suggested" teaching outline, as well as business practice guidelines that was distributed to most a bit at a time as needed.
While "Two-Man Set" was listed in Infinite Insights, it is important to understand the infinite Insights material was an accumulation of material from the sixties and early seventies that was ten years old at publication, and finally codified by Mr. Parker, but was in no way a mandated teaching list, but instead more of a historical reference written for all martial artists, not just his "Kenpo" people.
For some the Infinite Insights Volumes are a "Bible." They shouldn't be. They should instead be viewed in the historical context for which they were intended. I am pictured and/or represented in every volume, and while it was fun to shoot, the inconsistencies were intentional to reach the largest audience from every style and discipline he could imagine.