This document contains summaries of different types of monograms including: 1) Religious monograms such as the IHS monogram representing the name of Jesus in Greek and the papal or labarum cross. 2) Royal or monarchical ciphers such as the royal cipher of King George II of England. 3) Personal monograms of individuals like artist Albrecht Dürer. 4) Institutional monograms representing organizations, with an example of the monogram of electrical and electronics company AEG.