I got your answer re CPP.  Thank you very much.  Will it be taxable once I follow your nice clear instructions?

and

I also got a separate T4 for a Survivor Benefit.  Same procedure?

Thank you for your clear instructions. Since the amount listed on my NR4 is in Canadian dollars, do I need to convert it to US dollars before inputting it? Or should I just enter the amount listed? Much appreciated.

You should convert into US dollars as the current exchange rate is 1 Canadian dollar = .74 American dollars to avoid paying tax on non-existent money.  If you received 1,000 Canadian dollars you would list this under other income as $774 for the exchange rate difference.  Exchange rate is as of today.

xe.com currency converter

@ChinShien 

Thank you for your prompt response. Much appreciated!

@JosephS1