John McCallum has been covered at several points on this site already. What’s been missing in our discussions has been an insight into just how wonderful his writing style was. McCallum wrote in parables that were simultaneously funny and inspiring. This was best seen in McCallum’s iconic ‘Get Big’ drink article.
The ‘Get Big’ drink was a bulking technique that offered thousands of extra calories in an easy fix. Without delving into the article too much, I’ll stop now by saying that all of McCallum’s articles can be found in The Complete Keys to Progress, available here.