The first 2 SPSSs of this order were found by Ian Gambini in the late 1990s, up to 2013 Stephen Johnson had found 8. In 2013 Milla and Anderson found 1084 and in the same year James Williams found 47028. In 2014 Brian Trial found 186.
In July 2020 Jim Williams announced he had finalised enumeration of order 36 SPSSs. There are 6674067 SPSSs in this order.
The following listings have the names of the person (or persons) who discovered each SPSS.
Listings; Bouwkampcodes spsso36.bkp.zip and tablecodes spsso36.txt.zip and postscript spsso36.ps.zip.