That pack looks very similar to a pack that my dad had in the mid to late eighties that was made by Academy Broadway. You can search online for those packs and you will find several examples. Given the encircled "A" on the Bonanza logo, I am wondering if this was a rebranded Academy Broadway pack that was sold into a different channel.
I had a Jr. version of an Academy Broadway pack and as I recall it barely had enough capactiy for my 9lb JC Penny sleeping bag, an extra pair of jeans, and my vienna sausages in a can. My poor dad carried a 12 pound 3 man tent. It was a wonder we referred to those trips as recreation.