Back when our dd was 1 yo, one of her favorite things was an alphabet book. It was a large format book, published by DK. Each letter had its own page with lots of good sized photos along with the name of each object.

She was a tiny toddler, and it was comical to see her wobbling toward someone with that giant book. One of her first words was "readabook" and she said it when she was bringing you a book to read to her - often the DK word book.