'''"Cliff Hanger the Rain, and the River"''' is a book in The Adventures of Cliff Hanger series by Livingston Dangerously. This one was meant to teach the letter "R".
Cliff is, as usual, hanging from the cliff, when it starts to rain. Thus, a river forms under the cliff. He reaches for his survival manual and learns that if there's a rapidly rising river underneath your cliff, jump into it, and reach out, grab a salmon, and let it pull you to safety. Cliff jumps in, and sees a salmon. He grabs onto it, but it turns out to be a guy he lent his salmon suit last week. Cliff goes off a waterfall, and is back on the cliff.