diff --git a/docs/pages/About-the-NSHMP.md b/docs/pages/About-the-NSHMP.md
index 2ee3a89ea3da645cc77555b5faad65e554e5b928..54d1297ad82570ff8f21271163570e29c90a794f 100644
--- a/docs/pages/About-the-NSHMP.md
+++ b/docs/pages/About-the-NSHMP.md
@@ -11,7 +11,7 @@ Earthquake Hazards Reduction Act of 1977, as amended:
 >lifelines, including additional maps needed for performance-based design approaches."
 
 The NSHMP primarily produces long-term NSHMs that are used in U.S. building codes and numerous
-other seismic design requirements. The models are used is site-specific analyses and also for
+other seismic design requirements. The models are used in site-specific analyses and also for
 defining likely earthquake scenarios for emergency planning. NSHMs are considered reference
 (or baseline) models used by the risk, insurance and reinsurance industries, and they are also
 considered in other industries such as real estate lending. A 9-member steering committee of
diff --git a/docs/pages/Model-Editions.md b/docs/pages/Model-Editions.md
index 02d123367b4425f21e34385b4a77d9062380a54e..0509a8bc7aea43f5cee1712af7f8d5b425c5dc9d 100644
--- a/docs/pages/Model-Editions.md
+++ b/docs/pages/Model-Editions.md
@@ -51,7 +51,7 @@ Puerto Rico & <br/> U.S. Virgin Islands | 2003 | v1.0.0 | | | |
 included data to support updates to the U.S. Building Code, specifically hazard curves for peak
 ground acceleration (PGA), and 0.2 and 1.0 second spectral accelerations, all at a BC boundary site
 class with Vs30 = 760 m/s. Some time later, the model was deployed to the Unified Hazard Tool
-(UHT) and included support in the Wester U.S. for calculations at sites other than Vs30 = 760 m/s,
+(UHT) and included support in the Western U.S. for calculations at sites other than Vs30 = 760 m/s,
 consistent with dynamic calculations using the 2008 model. Subsequently, we updated the 2014
 model with [addional periods and site classes](https://pubs.er.usgs.gov/publication/ofr20181111).
 Doing so required dropping several ground motion models (GMMs) and a redistribution of logic-tree
diff --git a/docs/pages/Source-Types.md b/docs/pages/Source-Types.md
index fc6d2042ce951aa1b8662901e7c797e811df57ca..048829b218d967aecad0f214ce788074ade87d0d 100644
--- a/docs/pages/Source-Types.md
+++ b/docs/pages/Source-Types.md
@@ -40,7 +40,7 @@ spatial PDFs, [below](#spatial-pdfs)). When realizing each source the spatial PD
 by each regional rate in a rate-tree.
 
 Grid sources are represented in a model using a logic tree with a `rupture-sets.json` defining the
-ruptures on each branch.  Because gridded seismicity models may be govered by regionally
+ruptures on each branch.  Because gridded seismicity models may be governed by regionally
 varying MFD properties (e.g. `mMax`), rupture sets for grids are defined in a JSON array.
 
 **rupture-sets.json**: Defines an array of one or more rupture sets. Multiple rupture sets are
@@ -175,12 +175,12 @@ Finite fault source representation. The geometry, properties and rupture MFDs of
 are defined by one or more GeoJSONs and associated configuration. Depending on the complexity of
 the source, it may be represented using a single GeoJSON or result from stitching together
 multiple GeoJSONs (see note on fault section stitching, [below](#fault-section-stitching)). If a
-fault source is represented with a logic treek then `rupture-set.json` defines the ruptures for
+fault source is represented with a logic tree then `rupture-set.json` defines the ruptures for
 each branch. Depending on the MFDs and scaling relations used to determine a rupture size, some
 ruptures may fill the entire source model while smaller events are modeled as 'floating' ruptures;
 they occur in multiple locations on the fault surface with appropriately scaled rates. MFDs
-associated with finite fault models may be explicitely defined or or derived from slip rates.
-Fault rupture rates may be modeled using explicitely defined MFDs or logic trees of slip rate.
+associated with finite fault models may be explicitly defined or derived from slip rates.
+Fault rupture rates may be modeled using explicitly defined MFDs or logic trees of slip rate.
 
 **fault-source.geojson**: Defines the geometry and properties of a single source. In the example
 below the presence of a `rate-map` property indicates MFDs should be constructed from the supplied