Catherine Pooler - Stamp Set - Simple Alphabet. The Simple Alphabet Stamp Set is a 6x8 set with the full 26 letter alphabet 2 different ways. Use the letters by themselves or layered together to create all the words, monograms, initials you will need. The extra lines and circles and dots will make a fun layer on a card or will work great in your Canvo Bullet Journal. Catherine Pooler clear stamp sets are made out of high quality photopolymer. They cling easily to our acrylic grid stamping blocks.