diff --git a/app/services/iiif_print/derivative_rodeo_service.rb b/app/services/iiif_print/derivative_rodeo_service.rb
index 7afe3d85..c177a0d9 100644
--- a/app/services/iiif_print/derivative_rodeo_service.rb
+++ b/app/services/iiif_print/derivative_rodeo_service.rb
@@ -47,9 +47,18 @@ class DerivativeRodeoService
     # implementations for Adventist.  Those are reasonable assumptions but time will tell how
     # reasonable.
     #
+    # By convention, this method is returning output_location of the SpaceStone::Serverless
+    # processing.  We might know the original location that SpaceStone::Serverless processed, but
+    # that seems to be a tenuous assumption.
+    #
+    # In other words, where would SpaceStone, by convention, have written the original file and by
+    # convention written that original file's derivatives.
+    #
+    # TODO: We also need to account for PDF splitting
+    #
     # @param file_set [FileSet]
     # @return [String]
-    def self.derivative_rodeo_input_uri(file_set:)
+    def self.derivative_rodeo_input_uri(file_set:, filename: nil)
       return @derivative_rodeo_input_uri if defined?(@derivative_rodeo_input_uri)
 
       # TODO: URGENT For a child work (e.g. an image split off of a PDF) we will know that the file_set's
@@ -70,7 +79,7 @@ def self.derivative_rodeo_input_uri(file_set:)
       # expendiency, I'm using it.  See
       # https://github.com/samvera/hydra-works/blob/c9b9dd0cf11de671920ba0a7161db68ccf9b7f6d/lib/hydra/works/services/add_file_to_file_set.rb#L49-L53
       # TODO: Could we get away with filename that is passed in the create_derivatives process?
-      filename = Hydra::Works::DetermineOriginalName.call(file_set.original_file)
+      filename ||= Hydra::Works::DetermineOriginalName.call(file_set.original_file)
 
       # TODO: What kinds of exceptions might we raise if the location is not configured?  Do we need
       # to "validate" it in another step.
diff --git a/lib/iiif_print/jobs/child_works_from_pdf_job.rb b/lib/iiif_print/jobs/child_works_from_pdf_job.rb
index 5eea0ad1..e61b17b2 100644
--- a/lib/iiif_print/jobs/child_works_from_pdf_job.rb
+++ b/lib/iiif_print/jobs/child_works_from_pdf_job.rb
@@ -97,6 +97,13 @@ def prepare_import_data(original_pdf_path, image_files, user)
           PendingRelationship.create!(child_title: child_title,
                                       parent_id: @parent_work.id,
                                       child_order: child_title)
+
+          begin
+            # Clean up the temporary image path.
+            File.rm_f(image_path) if File.exist?(image_path)
+          rescue
+            # If we can't delete, let's move on.  Maybe it was already cleaned-up.
+          end
         end
       end
       # rubocop:enable Metrics/MethodLength
diff --git a/lib/iiif_print/split_pdfs/derivative_rodeo_splitter.rb b/lib/iiif_print/split_pdfs/derivative_rodeo_splitter.rb
index 9745cbff..3ba7d5df 100644
--- a/lib/iiif_print/split_pdfs/derivative_rodeo_splitter.rb
+++ b/lib/iiif_print/split_pdfs/derivative_rodeo_splitter.rb
@@ -1,41 +1,70 @@
 module IiifPrint
   module SplitPdfs
+    ##
+    # This class wraps the DerivativeRodeo::Generators::PdfSplitGenerator to find preprocessed
+    # images, or split a PDF if there are no preprocessed images.
+    #
+    # We have already attached the original file to the file_set.  We want to convert that original
+    # file that's attached to a input_uri (e.g. "file://path/to/original-file" as in what we have
+    # written to Fedora as the PDF)
+    #
+    # @see .call
     class DerivativeRodeoSplitter
       ##
-      # This class wraps the DerivativeRodeo::Generators::PdfSplitGenerator to find preprocessed
-      # images, or split a PDF if there are no preprocessed images.
-      #
-      # TODO: override output extension from default "tiff" in Derivative Rodeo
-      # TODO: define output_location_template & preprocessed_location_template
-
-      ##
-      # @param _path [String] unused here, kept for consistant splitter method signature
+      # @param path [String] the local file location
       # @param file_set [FileSet] file set containing a PDF file to split
+      #
       # @return [Array] paths to images split from each page of PDF file
-      def self.call(_path, file_set:)
-        new(file_set: file_set).split_files
+      def self.call(path, file_set:)
+        new(path, file_set: file_set).split_files
       end
 
-      def initialize(file_set:)
-        @path = IiifPrint::DerivativeRodeoService.derivative_rodeo_input_uri(file_set: file_set)
-      end
+      def initialize(path, file_set:, output_tmp_dir: Dir.tmpdir)
+        @input_uri = "file://#{path}"
 
-      def split_files
-        DerivativeRodeo::Generators::PdfSplitGenerator.new(
-          input_uris: @path,
-          output_location_template: template,
-          preprocessed_location_template: location
-        ).generated_files
+        # We are writing the images to a location that CarrierWave can upload.
+        #
+        # https://github.com/scientist-softserv/iiif_print/blob/b969541de1a0526305b54de37bf7cf100289f088/lib/iiif_print/jobs/child_works_from_pdf_job.rb#L108
+        output_template_path = File.join(output_tmp_dir, '{{ dir_parts[-1..-1] }}', '{{ filename }}')
+
+        @output_location_template = "file://#{output_template_path}"
+        @preprocessed_location_template = IiifPrint::DerivativeRodeoService.derivative_rodeo_input_uri(file_set: file_set, filename: filename)
       end
 
-      private
+      ##
+      # This is where, in "Fedora" we have the original file.  This is not the original file in the
+      # pre-processing location but instead the long-term location of the file in the application
+      # that mounts IIIF Print.
+      #
+      # @return [String]
+      attr_reader :input_uri
 
-      def template
-        'who knows'
-      end
+      ##
+      # This is the location where we're going to write the derivatives that will "go into Fedora".
+      #
+      # @return [String]
+      attr_reader :output_location_template
+
+      ##
+      # Where can we find, in the DerivativeRodeo's storage, what has already been done regarding
+      # derivative generation.
+      #
+      # For example, SpaceStone::Serverless will pre-process derivatives and write them into an S3
+      # bucket that we then use for IIIF Print.
+      #
+      # @return [String]
+      #
+      # @see https://github.com/scientist-softserv/space_stone-serverless/blob/7f46dd5b218381739cd1c771183f95408a4e0752/awslambda/handler.rb#L58-L63
+      attr_reader :preprocessed_location_template
 
-      def location
-        'who knows'
+      ##
+      # @return [Array<Strings>] the paths to each of the images split off from the PDF.
+      def split_files
+        DerivativeRodeo::Generators::PdfSplitGenerator.new(
+          input_uris: [@input_uri],
+          output_location_template: output_location_template,
+          preprocessed_location_template: preprocessed_location_template
+        ).generated_files.map { |location| location.file_path }
       end
     end
   end