These are exhibits from Marnie Parker's (aka Doe aka FemaleDeer) IF Art Show contests.
The complete information can be found at Marnie's IF Art Gallery: http://www.iffydoemain.org/iffyart/
IFWiki: Past_raif_topics:_IF_Theory:_part_1, IF_Art_Show
The Concept Behind IF Art: two news postings that gave rise to the idea.
Source code for Visualizing, an IF Art example by Marnie Parker.
Visualizing, an IF Art example by Marnie Parker Version 1.70 / Release 1 / Serial number 000218