#681 had this:

The visual poem, “Gloria,” superimposed on my text is by Ladislav Novak. I think my final definition of visual poetry still my best, but would reserve it now for “pure” visual poetry. Note that when the page above was published (in the 1990 edition of my Of Manywhere-at-Once), I thought of visual poetry as the union of textual and visual rather than verbal and visual matter. Otherwise, my definition of visual poetry is about as I have it now.
Tags: Bob Grumman, Poetics, visual poetry