diff --git a/R/bezier.R b/R/bezier.R
index 4e2ae79..5ac0b2e 100644
--- a/R/bezier.R
+++ b/R/bezier.R
@@ -1,7 +1,7 @@
 #' Curve a linestring
 #'
 #' Takes a [data-LineString] and returns a curved version
-#' by applying a Bezier http://en.wikipedia.org/wiki/Bezier_spline
+#' by applying a Bezier 
 #' spline algorithm.
 #'
 #' @export
diff --git a/R/centerofmass.R b/R/centerofmass.R
index 09b852d..e74232a 100644
--- a/R/centerofmass.R
+++ b/R/centerofmass.R
@@ -2,7 +2,7 @@
 #'
 #' Takes a [data-Feature] or a [data-FeatureCollection]
 #' and returns its center of mass using formula
-#' https://en.wikipedia.org/wiki/Centroid#Centroid_of_polygon
+#' 
 #'
 #' @export
 #' @param x a [data-Feature] or [data-FeatureCollection]
diff --git a/R/convex.R b/R/convex.R
index 30167f5..f05ccaa 100644
--- a/R/convex.R
+++ b/R/convex.R
@@ -2,7 +2,7 @@
 #'
 #' Takes a set of [data-Point]'s and returns a convex
 #' hull polygon. Internally, this uses the
-#' convex-hull (https://github.com/mikolalysenko/convex-hull) module
+#' convex-hull  module
 #' that implements a Monotone chain hull
 #'
 #' @export
diff --git a/R/data-types.R b/R/data-types.R
index 65ced7d..ac27212 100644
--- a/R/data-types.R
+++ b/R/data-types.R
@@ -1,6 +1,6 @@
 #' @title Description of GeoJSON data types
 #'
-#' @description GeoJSON types based on https://tools.ietf.org/html/rfc7946
+#' @description GeoJSON types based on 
 #'
 #' @section GeoJSON object:
 #'
diff --git a/R/defunct-deprecated.R b/R/defunct-deprecated.R
index 7091c24..a9ee55c 100644
--- a/R/defunct-deprecated.R
+++ b/R/defunct-deprecated.R
@@ -49,19 +49,19 @@ lawn_aggregate <- function(...) {
 #' \itemize{
 #'  \item [lawn_size]: Function removed. The `size`
 #'  method in turf.js has been removed.
-#'  See https://github.com/Turfjs/turf/issues/306
+#'  See 
 #'  \item [lawn_reclass]: Function removed. The `reclass`
 #'  method in turf.js has been removed.
-#'  See https://github.com/Turfjs/turf/issues/306
+#'  See 
 #'  \item [lawn_jenks]: Function removed. The `jenks`
 #'  method in turf.js has been removed.
-#'  See https://github.com/Turfjs/turf/issues/306
+#'  See 
 #'  \item [lawn_quantile]: Function removed. The `quantile`
 #'  method in turf.js has been removed.
-#'  See https://github.com/Turfjs/turf/issues/306
+#'  See 
 #'  \item [lawn_aggregate]: Function removed. The `aggregate`
 #'  method in turf.js has been removed.
-#'  See https://github.com/Turfjs/turf/issues/306
+#'  See 
 #'  \item [lawn_idw]: Function removed.
 #' }
 #'
diff --git a/R/destination.R b/R/destination.R
index 9219f2f..eae4cbf 100644
--- a/R/destination.R
+++ b/R/destination.R
@@ -3,7 +3,7 @@
 #' Takes a [data-Point] and calculates the location of a
 #' destination point given a distance in degrees, radians, miles, or
 #' kilometers; and bearing in degrees. Uses the
-#' Haversine formula (http://en.wikipedia.org/wiki/Haversine_formula) to
+#' Haversine formula  to
 #' account for global curvature.
 #'
 #' @export
diff --git a/R/distance.R b/R/distance.R
index 8e8a8a4..23771cf 100644
--- a/R/distance.R
+++ b/R/distance.R
@@ -2,7 +2,7 @@
 #'
 #' Calculates the distance between two [data-Point]s in degress,
 #' radians, miles, or kilometers. Uses the
-#' Haversine formula (http://en.wikipedia.org/wiki/Haversine_formula)
+#' Haversine formula 
 #' to account for global curvature.
 #'
 #' @export
diff --git a/R/hex_grid.R b/R/hex_grid.R
index 7e324a2..bae3f8b 100644
--- a/R/hex_grid.R
+++ b/R/hex_grid.R
@@ -4,7 +4,7 @@
 #' [data-FeatureCollection] of flat-topped hexagons
 #' ([data-Polygon] features) aligned in an "odd-q" vertical
 #' grid as described in Hexagonal Grids
-#' http://www.redblobgames.com/grids/hexagons/
+#' 
 #'
 #' @export
 #'
diff --git a/R/isolines.R b/R/isolines.R
index ba349a4..34b68e0 100644
--- a/R/isolines.R
+++ b/R/isolines.R
@@ -1,7 +1,7 @@
 #' Generate Isolines
 #'
 #' Takes [data-Point]'s with z-values and an array of value
-#' breaks and generates isolines (http://en.wikipedia.org/wiki/Isoline)
+#' breaks and generates isolines 
 #'
 #' @export
 #'
diff --git a/R/lawn-package.R b/R/lawn-package.R
index bf70a13..2f0d586 100644
--- a/R/lawn-package.R
+++ b/R/lawn-package.R
@@ -1,8 +1,8 @@
 #' R client for turf.js for geospatial analysis
 #'
 #' turf.js uses GeoJSON for all geographic data, and expects the data to be
-#' standard WGS84 (http://en.wikipedia.org/wiki/World_Geodetic_System)
-#' longitude,latitude coordinates. See https://geojson.io/ for a tool to
+#' standard WGS84 
+#' longitude,latitude coordinates. See for a tool to
 #' easily create GeoJSON in a browser.
 #'
 #' @seealso [lawn-defunct]
diff --git a/R/simplify.R b/R/simplify.R
index c2537ea..7b04ac2 100644
--- a/R/simplify.R
+++ b/R/simplify.R
@@ -17,7 +17,7 @@
 #' @family transformations
 #' @return A Feature of either [data-Polygon] or [data-LineString].
 #' @details Internally uses simplify-js
-#' (https://mourner.github.io/simplify-js/) to perform simplification.
+#'  to perform simplification.
 #'
 #' @examples
 #' feature <- '{
diff --git a/man/data-types.Rd b/man/data-types.Rd
index a047588..9f88ecd 100644
--- a/man/data-types.Rd
+++ b/man/data-types.Rd
@@ -15,7 +15,7 @@
 \alias{data-GeoJSON}
 \title{Description of GeoJSON data types}
 \description{
-GeoJSON types based on https://tools.ietf.org/html/rfc7946
+GeoJSON types based on
 }
 \section{GeoJSON object}{
 
diff --git a/man/lawn-defunct.Rd b/man/lawn-defunct.Rd
index 5f6efe7..4a1f097 100644
--- a/man/lawn-defunct.Rd
+++ b/man/lawn-defunct.Rd
@@ -7,19 +7,19 @@
 \itemize{
 \item \link{lawn_size}: Function removed. The \code{size}
 method in turf.js has been removed.
-See https://github.com/Turfjs/turf/issues/306
+See
 \item \link{lawn_reclass}: Function removed. The \code{reclass}
 method in turf.js has been removed.
-See https://github.com/Turfjs/turf/issues/306
+See
 \item \link{lawn_jenks}: Function removed. The \code{jenks}
 method in turf.js has been removed.
-See https://github.com/Turfjs/turf/issues/306
+See
 \item \link{lawn_quantile}: Function removed. The \code{quantile}
 method in turf.js has been removed.
-See https://github.com/Turfjs/turf/issues/306
+See
 \item \link{lawn_aggregate}: Function removed. The \code{aggregate}
 method in turf.js has been removed.
-See https://github.com/Turfjs/turf/issues/306
+See
 \item \link{lawn_idw}: Function removed.
 }
 }
diff --git a/man/lawn-package.Rd b/man/lawn-package.Rd
index d3e52a1..55a80aa 100644
--- a/man/lawn-package.Rd
+++ b/man/lawn-package.Rd
@@ -7,8 +7,8 @@
 \title{R client for turf.js for geospatial analysis}
 \description{
 turf.js uses GeoJSON for all geographic data, and expects the data to be
-standard WGS84 (http://en.wikipedia.org/wiki/World_Geodetic_System)
-longitude,latitude coordinates. See https://geojson.io/ for a tool to
+standard WGS84
+longitude,latitude coordinates. See for a tool to
 easily create GeoJSON in a browser.
 }
 \seealso{
diff --git a/man/lawn_bezier.Rd b/man/lawn_bezier.Rd
index bd92e98..36df32e 100644
--- a/man/lawn_bezier.Rd
+++ b/man/lawn_bezier.Rd
@@ -23,7 +23,7 @@ A \link{data-LineString} curved line.
 }
 \description{
 Takes a \link{data-LineString} and returns a curved version
-by applying a Bezier http://en.wikipedia.org/wiki/Bezier_spline
+by applying a Bezier
 spline algorithm.
 }
 \examples{
diff --git a/man/lawn_center_of_mass.Rd b/man/lawn_center_of_mass.Rd
index acba68f..5780589 100644
--- a/man/lawn_center_of_mass.Rd
+++ b/man/lawn_center_of_mass.Rd
@@ -20,7 +20,6 @@ a \link{data-Feature}<(\link{data-Point})>
 \description{
 Takes a \link{data-Feature} or a \link{data-FeatureCollection}
 and returns its center of mass using formula
-https://en.wikipedia.org/wiki/Centroid#Centroid_of_polygon
 }
 \examples{
 x <- '{
diff --git a/man/lawn_convex.Rd b/man/lawn_convex.Rd
index 2ad72f0..b82faf4 100644
--- a/man/lawn_convex.Rd
+++ b/man/lawn_convex.Rd
@@ -20,7 +20,7 @@ a convex hull \link{data-Polygon}
 \description{
 Takes a set of \link{data-Point}'s and returns a convex
 hull polygon. Internally, this uses the
-convex-hull (https://github.com/mikolalysenko/convex-hull) module
+convex-hull  module
 that implements a Monotone chain hull
 }
 \examples{
diff --git a/man/lawn_destination.Rd b/man/lawn_destination.Rd
index 1004009..d0f2d0a 100644
--- a/man/lawn_destination.Rd
+++ b/man/lawn_destination.Rd
@@ -27,7 +27,7 @@ the calculated destination, a \link{data-Feature}<\link{data-Point}>
 Takes a \link{data-Point} and calculates the location of a
 destination point given a distance in degrees, radians, miles, or
 kilometers; and bearing in degrees. Uses the
-Haversine formula (http://en.wikipedia.org/wiki/Haversine_formula) to
+Haversine formula  to
 account for global curvature.
 }
 \examples{
diff --git a/man/lawn_distance.Rd b/man/lawn_distance.Rd
index 3c5a3c4..e90bfe8 100644
--- a/man/lawn_distance.Rd
+++ b/man/lawn_distance.Rd
@@ -25,7 +25,7 @@ Single numeric value
 \description{
 Calculates the distance between two \link{data-Point}s in degress,
 radians, miles, or kilometers. Uses the
-Haversine formula (http://en.wikipedia.org/wiki/Haversine_formula)
+Haversine formula
 to account for global curvature.
 }
 \examples{
diff --git a/man/lawn_hex_grid.Rd b/man/lawn_hex_grid.Rd
index 248b1d6..162421c 100644
--- a/man/lawn_hex_grid.Rd
+++ b/man/lawn_hex_grid.Rd
@@ -22,7 +22,6 @@ Takes a bounding box and a cell size in degrees and returns a
 \link{data-FeatureCollection} of flat-topped hexagons
 (\link{data-Polygon} features) aligned in an "odd-q" vertical
 grid as described in Hexagonal Grids
-http://www.redblobgames.com/grids/hexagons/
 }
 \examples{
 lawn_hex_grid(c(-96,31,-84,40), 50, 'miles')
diff --git a/man/lawn_isolines.Rd b/man/lawn_isolines.Rd
index d725c4f..645e486 100644
--- a/man/lawn_isolines.Rd
+++ b/man/lawn_isolines.Rd
@@ -42,7 +42,7 @@ A \link{data-FeatureCollection} of isolines
 }
 \description{
 Takes \link{data-Point}'s with z-values and an array of value
-breaks and generates isolines (http://en.wikipedia.org/wiki/Isoline)
+breaks and generates isolines
 }
 \details{
 Warning: this function seems to be broken, not sure why
diff --git a/man/lawn_simplify.Rd b/man/lawn_simplify.Rd
index eb630b8..9d3aaf9 100644
--- a/man/lawn_simplify.Rd
+++ b/man/lawn_simplify.Rd
@@ -41,7 +41,7 @@ and returns a simplified version.
 }
 \details{
 Internally uses simplify-js
-(https://mourner.github.io/simplify-js/) to perform simplification.
+to perform simplification.
 }
 \examples{
 feature <- '{