diff --git a/collects/scribble/base-render.rkt b/collects/scribble/base-render.rkt
index c9a428e6..99a10c65 100644
--- a/collects/scribble/base-render.rkt
+++ b/collects/scribble/base-render.rkt
@@ -76,7 +76,7 @@
                            (unless (stop-at-part? p)
                              (loop p #f #f)))
                          (part-parts p)))))
-        (for/list ([k (in-hash-keys ht)]) (main-collects-relative->path k))))
+        (for/list ([k (in-hash-keys ht)]) (if (bytes? k) k (main-collects-relative->path k)))))
 
     (define/private (extract-style-style-files s ht pred extract)
       (for ([v (in-list (style-properties s))])
diff --git a/collects/scribble/html-properties.rkt b/collects/scribble/html-properties.rkt
index 9d46cabc..0644a511 100644
--- a/collects/scribble/html-properties.rkt
+++ b/collects/scribble/html-properties.rkt
@@ -7,7 +7,7 @@
  [hover-property ([text string?])]
  [script-property ([type string?]
                    [script (or/c path-string? (listof string?))])]
- [css-addition ([path (or/c path-string? (cons/c 'collects (listof bytes?)))])]
+ [css-addition ([path (or/c path-string? (cons/c 'collects (listof bytes?)) bytes?)])]
  [html-defaults ([prefix-path (or/c bytes? path-string? (cons/c 'collects (listof bytes?)))]
                  [style-path (or/c bytes? path-string? (cons/c 'collects (listof bytes?)))]
                  [extra-files (listof (or/c path-string? (cons/c 'collects (listof bytes?))))])]
diff --git a/collects/scribble/latex-properties.rkt b/collects/scribble/latex-properties.rkt
index 7e6396aa..5ad7a87c 100644
--- a/collects/scribble/latex-properties.rkt
+++ b/collects/scribble/latex-properties.rkt
@@ -3,7 +3,7 @@
          racket/contract/base)
 
 (provide-structs
- [tex-addition ([path (or/c path-string? (cons/c 'collects (listof bytes?)))])]
+ [tex-addition ([path (or/c path-string? (cons/c 'collects (listof bytes?)) bytes?)])]
  [latex-defaults ([prefix (or/c bytes? path-string? (cons/c 'collects (listof bytes?)))]
                   [style (or/c bytes? path-string? (cons/c 'collects (listof bytes?)))]
                   [extra-files (listof (or/c path-string? (cons/c 'collects (listof bytes?))))])])
diff --git a/collects/scribble/latex-render.rkt b/collects/scribble/latex-render.rkt
index f0544803..ff2bbaaf 100644
--- a/collects/scribble/latex-render.rkt
+++ b/collects/scribble/latex-render.rkt
@@ -103,7 +103,9 @@
                     (lambda ()
                       (copy-port (current-input-port) (current-output-port))))))
             (for ([style-file (in-list all-style-files)])
-              (install-file style-file)))
+              (if (bytes? style-file)
+                  (display style-file)
+                  (install-file style-file))))
         (when whole-doc?
           (printf "\\begin{document}\n\\preDoc\n")
           (when (part-title-content d)
diff --git a/collects/scribblings/scribble/core.scrbl b/collects/scribblings/scribble/core.scrbl
index baefb3fa..07a5fcf1 100644
--- a/collects/scribblings/scribble/core.scrbl
+++ b/collects/scribblings/scribble/core.scrbl
@@ -1383,11 +1383,14 @@ script alternative to the element content.}
 
 
 @defstruct[css-addition ([path (or/c path-string? 
-                                     (cons/c 'collects (listof bytes?)))])]{
+                                     (cons/c 'collects (listof bytes?))
+                                     bytes?)])]{
 
-Used as a @tech{style property} to supply a CSS file to be referenced
-in the generated HTML. This property can be attached to any style, and
-all additions are collected to the top of the generated HTML page.
+Used as a @tech{style property} to supply a CSS file (if @racket[path]
+is a path, string, or list) or content (if @racket[path] is a byte
+string) to be referenced or included in the generated HTML. This
+property can be attached to any style, and all additions are collected
+to the top of the generated HTML page.
 
 The @racket[path] field can be a result of
 @racket[path->main-collects-relative].}
@@ -1421,12 +1424,14 @@ Like @racket[latex-defaults], but use for the
 
 
 @defstruct[tex-addition ([path (or/c path-string? 
-                                     (cons/c 'collects (listof bytes?)))])]{
+                                     (cons/c 'collects (listof bytes?))
+                                     bytes?)])]{
 
-Used as a @tech{style property} to supply a @filepath{.tex} file to be
-included in the generated Latex. This property can be attached to any
-style, and all additions are collected to the top of the generated
-Latex file.
+Used as a @tech{style property} to supply a @filepath{.tex} file (if
+@racket[path] is a path, string, or list) or content (if @racket[path]
+is a byte string) to be included in the generated Latex. This property
+can be attached to any style, and all additions are collected to the
+top of the generated Latex file.
 
 The @racket[path] field can be a result of
 @racket[path->main-collects-relative].}