Janet and Allan Ahlberg 1999
A little baby in England during WWII (you can tell from clues in the illustrations, like the double decker bus and the father's uniform) sees the word around him. His sisters playing, his grandmother doing washing, his mom making tea. The pictures are full of things to look at (which I love!) and a hole on each page leads to the next (peek-a-boo!). It's weird for me to say "peepo" and not "peekaboo" but I guess that's the English version. It's one of my favorites to read to Charlotte at naptime.