I did a lot of research on this at one point, and these are what I ended up going with and was quite pleased. You can probably find them cheaper at abe books or

I did a lot of research on this at one point, and these are what I ended up going with and was quite pleased. You can probably find them cheaper at abe books or somewhere, I'm just linking amazon for the ease (hopefully amazon links are allowed) https://www.amazon.com/Calculus-4th-Michael-Spivak/dp/0914098918 https://www.amazon.com/Calculus-4th-Michael-Spivak/dp/091409... https://www.amazon.com/Combined-Answer-Calculus-Fourth-Editions/dp/0914098926 https://www.amazon.com/Combined-Answer-Calculus-Fourth-Editi...