Avant Garde was a magazine notable for graphic and logogram design by Herb Lubalin.
Dry transfer is a term used to describe decals which can be applied without the use of water or other solvent. Sometimes they are called rub-ons or rubdowns due to the method of application.
In writing and typography a ligature occurs where two or more letter-forms are joined as a single glyph. Ligatures usually replace two sequential characters sharing common components, and are part of a more general class of glyphs called "contextual forms" where the specific shape of a letter depends on context such as surrounding letters or proximity to the end of a line.
Found these awesome Avant Garde ligatures in amongst my letraset, scanned then in and managed to use them for a project. I flipping love ligatures..