Thirty years ago, my article "Cardinal Transposals" appeared in the November 1975 Word Ways. That article presented transposals for the numbers ONE to TWENTY, and then it tens THIRTY to NINETY (omitting EIGHTY). Since then, no other transposal material has appeared for the cardinal numbers TWENTY ONE and upwards.
"Higher Cardinal Transposals,"
Word Ways: Vol. 38
, Article 11.
Available at: http://digitalcommons.butler.edu/wordways/vol38/iss2/11