Some corrections need to be made to some of the other reviews of Spirit Archives. The first Spirit story that was not written, penciled and inked by Will Eisner appeared on May 3, 1942, about 2/3 of the way through Spirit Archive volume 4. The May 3 story, like all the later stories in volume 4, was written and laid out by Eisner, who also probably did some pencils, and perhaps even a little inking. But most of the penciling on this and other May and June stories was done by Lou Fine and inks were by Fine and various assistants. Some of these stories are better than anything in the first 3 Archives. So don't pass on this volume. It is all excellent work. If you liked the first 3 volumes, you are going to like this. The front cover to volume 4, taken from the June 7 splash panel, is almost certainly the work of Lou Fine, based on a layout by Eisner. If you like Eisner, this is not to be missed.
Comprehensive writing and art credits for the whole run of the Spirit, unfortunately lacking in the Archives themselves, are available on the internet.