RARE Bill Martin Jr readers book lot - 18 books- 1970 hardcover

All in good to excellent shape These are mostly (or possibly all) first editions from 1970 All books are from the bill Martin jr series (author of Brown Bear Brown Bear, Chicka Chicka boom and many other childhood classics) Bill Martin jr authored all but 4 of these but they were all included in his reader series. They are all very unique books and the artwork is great If you would like more specific photos comment below.