Army VTOL fixed-wing aircraft (US) identification

Factual Questions
1

Packed away somewhere in a box, I have a book that I got in the early-'70s when I was ten. It might have been a Time-Life book, oversized and with a largely-orange cover, that had airplane photos and illustrations in it. I loved that book!

Anyway, there were illustrations of a couple of US Army experimental VTOL fixed-wing aircraft in it. One had a pair of large engines faired onto the sides of the fuselage, and had a pair of ‘closet doors’ on top of the fuselage that opened up to take in the required air.

The other was a much sleeker-looking aircraft that, IIRC, had round fans in the wings. The fans pivoted to 90º (along the longitudinal axis; again, IIRC) for vertical takeoff, and lay flat (giving the wing a normal appearance) in forward flight.

What were these aircraft?

2

I should have looked harder before I posted.

The first aircraft I mentioned was the Lockheed XV-4A Hummingbird, and the second one was the Ryan XV-5 Vertifan. (For the latter, I misremembered the fan configuration. I was wondering how it worked when I wrote the OP, but the photos in the link show my error and make it clear how lift was made.)